Joel T. Johnson

According to our database, Joel T. Johnson authored at least 251 papers between 1993 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Impacts of Spaceborne GNSS-R System Observations on Storm Surge Prediction: A Hurricane Harvey Case Study Using CYGNSS Full DDM Downlinks.

Younghun Kang, Ethan J. Kubatko, Mohammad M. Al-Khaldi, Joel T. Johnson, Suranjan Nepal, Aaron Sines

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2024

Ocean Wave Period Measurements Using S-Band Signals of Opportunity Reflections.

James Gaudreau, Ethan Raines, Joel T. Johnson, James L. Garrison, Jeffrey D. Ouellette, Rashmi Shah

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2024

A Study of the Kirchhoff Approximation for the Coherent Reflection Coefficient of a 1-D Perfectly Conducting Rough Surface.

Ethan Raines, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2024

Modeling Soil Moisture Retrieval Errors in the Time-Series Ratio Method.

Dustin Horton, Alexandra Bringer, Joel T. Johnson, Jeonghwan Park, Mohammad M. Al-Khaldi, Rajat Bindlish

IEEE Geosci. Remote. Sens. Lett., 2024

Simulating 0.4-2.5 GHz Brightness Temperatures of the Ross Ice Shelf, Antarctica.

Marco Brogioni, Kenneth C. Jezek, Joel T. Johnson, Marion Leduc-Leballeur, Caglar Yardim, Leung Tsang, Shujie Wang, Giovanni Macelloni

IEEE Geosci. Remote. Sens. Lett., 2024

2023

Radio Dynamic Zones: Motivations, Challenges, and Opportunities to Catalyze Spectrum Coexistence.

Mariya Zheleva, Christopher Robert Anderson, Mustafa Aksoy, Joel T. Johnson, Habib O. Affinnih, Christopher G. DePree

IEEE Commun. Mag., June, 2023

Sea Surface Scattering Observations and Predictions Using Satellite-Based S-Band Signals-of-Opportunity.

Jeffrey D. Ouellette, Ethan Raines, Joel T. Johnson, William T. Bounds, David J. Dowgiallo, Jakov V. Toporkov, Paul A. Hwang

IEEE Trans. Geosci. Remote. Sens., 2023

Efficient Calculation of the Kirchhoff Integral for Predicting the Bistatic Normalized Radar Cross Section of Ocean-Like Surfaces.

Joel T. Johnson, Jakov V. Toporkov, Paul A. Hwang, Jeffrey D. Ouellette

IEEE Trans. Geosci. Remote. Sens., 2023

Using Lidar Digital Elevation Models for Reflectometry Land Applications.

Erik Hodges, James D. Campbell, Amer Melebari, Alexandra Bringer, Joel T. Johnson, Mahta Moghaddam

IEEE Trans. Geosci. Remote. Sens., 2023

Joint Active and Passive Microwave Thermometry of Ice Sheets.

Anna L. Broome, Dustin M. Schroeder, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2023

Using Synthetic Cyclone Models for High Wind GNSS-R Calibration, Validation, and Algorithm Development: A CYGNSS Case Study.

Mohammad M. Al-Khaldi, Scott Gleason, Joel T. Johnson, Rajeswari Balasubramaniam, Christopher S. Ruf, Darren S. McKague, Bachir Annane, Tianlin Wang, Anthony Russel, Dorina Twigg

IEEE Trans. Geosci. Remote. Sens., 2023

Toward Internal Ice-Sheet Temperature Retrieval Using Microwave Radiometry and Simplified Ice-Flow Models.

Nithin Sugavanam, Emre Ertin, Caglar Yardim, Joel T. Johnson, Kenneth C. Jezek, Joseph A. MacGregor

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2023

First Results from Mapperr: The Multi-Frequency Active Passive Polar Exploration Radar-Radiometer.

Anna L. Broome, Dustin M. Schroeder, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2023

2022

Greenland Ice Sheet Subsurface Temperature Estimation Using Ultrawideband Microwave Radiometry.

Caglar Yardim, Joel T. Johnson, Kenneth C. Jezek, Mark J. Andrews, Michael Durand, Yuna Duan, Shurun Tan, Leung Tsang, Marco Brogioni, Giovanni Macelloni, Alexandra Bringer

IEEE Trans. Geosci. Remote. Sens., 2022

Relationships Between L-Band Brightness Temperature, Backscatter, and Physical Properties of the Ross Ice Shelf Antarctica.

Kenneth C. Jezek, Shujie Wang, Marion Leduc-Leballeur, Joel T. Johnson, Marco Brogioni, Julie Z. Miller, David G. Long, Giovanni Macelloni

IEEE Trans. Geosci. Remote. Sens., 2022

Significant Wave Height and Bistatic Doppler Signals of Microwave Scattering From the Ocean Surface: With Emphasis on the Swell Factor.

Paul A. Hwang, Jeffrey D. Ouellette, Jakov V. Toporkov, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2022

Feasibility of Estimating Ice Sheet Internal Temperatures Using Ultra-Wideband Radiometry.

Yuna Duan, Caglar Yardim, Michael Durand, Kenneth C. Jezek, Joel T. Johnson, Alexandra Bringer, Shurun Tan, Leung Tsang, Mustafa Aksoy

IEEE Trans. Geosci. Remote. Sens., 2022

Studies of Sea-Ice Thickness and Salinity Retrieval Using 0.5-2 GHz Microwave Radiometry.

Oguz Demir, Joel T. Johnson, Kenneth C. Jezek, Marco Brogioni, Giovanni Macelloni, Lars Kaleschke, Ludovic Brucker

IEEE Trans. Geosci. Remote. Sens., 2022

Measurements of 540-1740 MHz Brightness Temperatures of Sea Ice During the Winter of the MOSAiC Campaign.

Oguz Demir, Joel T. Johnson, Kenneth C. Jezek, Mark J. Andrews, Kenneth Ayotte, Gunnar Spreen, Stefan Hendricks, Lars Kaleschke, Marc Oggier, Mats Granskog, Allison Fong, Mario Hoppmann, Ilkka Matero, Daniel Scholz

IEEE Trans. Geosci. Remote. Sens., 2022

Intercomparison of Electromagnetic Scattering Models for Delay-Doppler Maps Along a CYGNSS Land Track With Topography.

James D. Campbell, Ruzbeh Akbar, Alexandra Bringer, Davide Comite, Laura Dente, Scott T. Gleason, Leila Guerriero, Erik Hodges, Joel T. Johnson, Seung-Bum Kim, Amer Melebari, Nazzareno Pierdicca, Christopher S. Ruf, Leung Tsang, Tianlin Wang, Haokui Xu, Jiyue Zhu, Mahta Moghaddam

IEEE Trans. Geosci. Remote. Sens., 2022

Properties of the 500-2000-MHz RFI Environment Observed in High-Latitude Airborne Radiometer Measurements.

Mark J. Andrews, Joel T. Johnson, Marco Brogioni, Giovanni Macelloni, Kenneth C. Jezek

IEEE Trans. Geosci. Remote. Sens., 2022

Neural Network-Based Control of an Adaptive Radar.

Peter John-Baptiste, Joel Tidmore Johnson, Graeme Edward Smith

IEEE Trans. Aerosp. Electron. Syst., 2022

Fully Adaptive Radar for Multiple Target Tracking.

Peter John-Baptiste, Kristine L. Bell, Joel Tidmore Johnson, Graeme Edward Smith

IEEE Trans. Aerosp. Electron. Syst., 2022

Physics-Based Forward Modeling of Ocean Surface Swell Effects on SMAP L1-C NRCS Observations.

Shanka N. Wijesundara, Joel T. Johnson

Sensors, 2022

Radar Backscattering of Rough Soil Surfaces From L-Band to Ku-Band With NMM3D.

Jiyue Zhu, Leung Tsang, Tien-Hao Liao, Joel T. Johnson, Do Hyuk Kang, Edward J. Kim

IEEE Geosci. Remote. Sens. Lett., 2022

Diurnal Variations in Ocean Wind Speeds Measured by CYGNSS and Other Satellites.

Yuchan Yi, Joel T. Johnson, Xiaochun Wang

IEEE Geosci. Remote. Sens. Lett., 2022

A Comparison of Bistatic and Monostatic Radar Images of 1-D Perfectly Conducting Rough Surfaces.

Ethan Raines, James Park, Joel T. Johnson, Robert J. Burkholder

IEEE Geosci. Remote. Sens. Lett., 2022

A Simulation Study of Significant Wave Height Retrieval From Bistatic Scattering of Signals of Opportunity.

Paul A. Hwang, Jeffrey D. Ouellette, Jakov V. Toporkov, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2022

500-2000-MHz Airborne Brightness Temperature Measurements Over the East Antarctic Plateau.

Marco Brogioni, Marion Leduc-Leballeur, Mark J. Andrews, Giovanni Macelloni, Joel T. Johnson, Kenneth C. Jezek, Caglar Yardim

IEEE Geosci. Remote. Sens. Lett., 2022

Soil Moisture Retrievals Using CYGNSS Data in a Time-Series Ratio Method: Progress Update and Error Analysis.

Mohammad M. Al-Khaldi, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2022

A Study of Dome-C Ice Sheet Parameter Estimation Using 0.5-2 GHz Ultra-Wideband Radiometry.

Caglar Yardim, Joel T. Johnson, Kenneth C. Jezek, Mark J. Andrews, Marion Leduc-Leballeur, Marco Brogioni, Giovanni Macelloni

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

P and L Band Reflectometry Modelling Based on Analytical Kirchhoff Solutions (AKS) with Land Surface Lidar Data.

Haokui Xu, Leung Tsang, Jongwoo Jeong, Joel T. Johnson, Alexandra Bringer, Simon Yueh, Xiaolan Xu

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

The Impact of Firn Models on Ultrawideband Brightness Temperatures in the Partially Coherent Model.

Haokui Xu, Brooke Medley, Leung Tsang, Joel T. Johnson, Kenneth C. Jezek

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

A Study of the Relationship Between Surface Roughness and GNSS-R Coherent Returns Over Land.

Tianlin Wang, Alexandra Bringer, Joel T. Johnson, Mohammad M. Al-Khaldi

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Wideband Radiometric Signatures of Snow Pack in the Keweenaw Peninsula, Michigan, During the Winter of 2021-22.

Roger D. De Roo, Joel T. Johnson, Mark S. Andrews, Oguz Demir, Alexandra Bringer

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Time-Series Ratio Algorithm for Nisar Soil Moisture Retrieval.

Jeonghwan Park, Rajat Bindlish, Alexandra Bringer, Dustin Horton, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

IMPACT OF CYGNSS LEVEL-2 DERIVED WIND FIELDS ON STORM SURGE MODELING.

Younghun Kang, Ethan J. Kubatko, Joel T. Johnson, Mohammad AI-Khaldi, Stephen J. Katzberg

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

On the Cutoff Wavenumber in the Geometrical Optics Theory of Near Specular Scattering from the Sea Surface.

Joel T. Johnson, Ethan Raines, Jakov V. Toporkov, Paul A. Hwang, Jeffrey D. Ouellette

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Progress in Time-Series Soil Moisture Retrieval Using L- and S-Band Radar Backscatter.

Dustin Horton, Alexandra Bringer, Joel T. Johnson, Jeonghwan Park, Rajat Bindlish

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Simulation Study of a Probabilistic Measurement Terminator for cloud Radar Systems using Cloudsat data.

Jakob DeLong, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Ice Sheet Melt Water Profile Mapping Using Multi-Frequency Microwave Radiometry.

Andreas Colliander, Mohammad Mousavi, Sidharth Misra, Shannon T. Brown, John S. Kimball, Julie Z. Miller, Joel T. Johnson, Mariko Burgin

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Quantifying the Complimentary Sensitivities of Active and Passive Microwave Measurements to Ice-Sheet Thermal Signatures.

Anna L. Broome, Dustin M. Schroeder, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Analysis of LIDAR Digital Elevation Models to Support CYGNSS CAL/VAL Activities.

Alexandra Bringer, Tianlin Wang, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Modeling the Errors of a Time Series Algorithm for Retrieving Soil Moisture in the NISAR Mission.

Alexandra Bringer, Joel T. Johnson, Jeonghwan Park, Rajat Bindlish, Dustin Horton

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Monitoring The L-Band RFI Environment: Tracking RFI Sources Observed by Smap.

Alexandra Bringer, Joel T. Johnson, Priscilla N. Mohammed, Sidharth Misra, David M. Le Vine

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

Towards a Unified Framework for Scattering Models at Microwave and Optical Wavelengths: The Bispinorial Description of Polarization States.

Ismail Baris, Thomas Jagdhuber, Harald Anglberger, Andrey Osipov, François Jonard, Joel T. Johnson, Thomas Eibert

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2022

2021

A Partially Coherent Approach for Modeling Polar Ice Sheet 0.5-2-GHz Thermal Emission.

Shurun Tan, Leung Tsang, Haokui Xu, Joel T. Johnson, Kenneth C. Jezek, Caglar Yardim, Michael Durand, Yuna Duan

IEEE Trans. Geosci. Remote. Sens., 2021

Electromagnetic Scattering and Emission From Large Rough Surfaces With Multiple Elevations Using the MLSD-SMCG Method.

Yanlei Du, Jian Yang, Xiaofeng Yang, Leung Tsang, Kun-Shan Chen, Joel T. Johnson, Junjun Yin

IEEE Trans. Geosci. Remote. Sens., 2021

An Algorithm for Detecting Coherence in Cyclone Global Navigation Satellite System Mission Level-1 Delay-Doppler Maps.

Mohammad M. Al-Khaldi, Joel T. Johnson, Scott Gleason, Eric Loria, Andrew J. O'Brien, Yuchan Yi

IEEE Trans. Geosci. Remote. Sens., 2021

Inland Water Body Mapping Using CYGNSS Coherence Detection.

Mohammad M. Al-Khaldi, Joel T. Johnson, Scott Gleason, Clara C. Chew, Cynthia Gerlein-Safdi, Rashmi Shah, Cinzia Zuffada

IEEE Trans. Geosci. Remote. Sens., 2021

Evaluation of Surface Melt on the Greenland Ice Sheet Using SMAP L-Band Microwave Radiometry.

Mohammad Mousavi, Andreas Colliander, Julie Z. Miller, Dara Entekhabi, Joel T. Johnson, Christopher A. Shuman, John S. Kimball, Zoe R. Courville

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

Microwave Radiometry at Frequencies From 500 to 1400 MHz: An Emerging Technology for Earth Observations.

Joel T. Johnson, Kenneth C. Jezek, Giovanni Macelloni, Marco Brogioni, Leung Tsang, Emmanuel P. Dinnat, Jeffrey P. Walker, Nan Ye, Sidharth Misra, Jeffrey R. Piepmeier, Rajat Bindlish, David M. Le Vine, Peggy E. O'Neill, Lars Kaleschke, Mark J. Andrews, Caglar Yardim, Mustafa Aksoy, Michael Durand, Chi-Chih Chen, Oguz Demir, Alexandra Bringer, Julie Z. Miller, Shannon T. Brown, Ron Kwok, Tong Lee, Yann Kerr, Dara Entekhabi, Jinzheng Peng, Andreas Colliander, Steven Chan, Joseph A. MacGregor, Brooke Medley, Roger DeRoo, Mark Drinkwater

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

Properties of the RFI Environment at 1400-1427 MHz as Observed by the Soil Moisture Active/Passive Mission Microwave Radiometer.

Alexandra Bringer, Joel T. Johnson, Yan Soldo, David M. Le Vine, Priscilla N. Mohammed, Sidharth Misra, Paolo de Matthaeis, Jeffrey R. Piepmeier

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

Mapping the Dynamics of the South Asian Monsoon Using CYGNSS's Level-1 Signal Coherency.

Mohammad M. Al-Khaldi, Rashmi Shah, Clara C. Chew, Joel T. Johnson, Scott Gleason

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

Matched Filter Cyclone Maximum Wind Retrievals Using CYGNSS: Progress Update and Error Analysis.

Mohammad M. Al-Khaldi, Stephen J. Katzberg, Joel T. Johnson, Younghun Kang, Ethan J. Kubatko, Scott Gleason

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

Studies of a Rapid Change Detector Using CYGNSS Level-2 Wind Speed Products.

Mohammad M. Al-Khaldi, Alexandra Bringer, Joel T. Johnson

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021

The IEEE-SA Working Group on Spaceborne GNSS-R: Scene Study.

Hugo Carreno-Luengo, Adriano Camps, Chris Ruf, Nicolas Floury, Manuel Martín-Neira, Tianlin Wang, Siri Jodha S. Khalsa, Maria Paola Clarizia, Jennifer Reynolds, Joel T. Johnson, Andrew O'Brien, Carmela Galdi, Maurizio di Bisceglie, Andreas Dielacher, Philip Jales, Martin Unwin, Lucinda S. King, Giuseppe Foti, Rashmi Shah, Daniel Pascual, Bill Schreiner, Milad Asgarimehr, Jens Wickert, Serni Ribo, Estel Cardellach

IEEE Access, 2021

Limits on Antarctic Ice Sheet Temperature Estimation using 0.5-2 GHz Ultra-Wideband Radiometry.

Caglar Yardim, Mark J. Andrews, Joel T. Johnson, Kenneth C. Jezek, Marion Leduc-Leballeur, Marco Brogioni, Giovanni Macelloni

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Snowpack Remote Sensing using Wideband Long-Wavelength Microwave Radiometry.

Maryam Salim, Roger D. De Roo, Mark J. Andrews, Joel T. Johnson, Alexandra Bringer, Kamal Sarabandi

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Soil Moisture Retrieval using a Time-Series Ratio Algorithm for the Nisar Mission.

Jeonghwan Park, Rajat Bindlish, Alexandra Bringer, Dustin Horton, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Time-Series Soil Moisture Retrieval Using S-Band Backscatter Measurements from the SMEX02 Campaign.

Dustin Horton, Alexandra Bringer, Joel T. Johnson, Jeonghwan Park, Rajat Bindlish

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Studies of the Retrieval of Sea Ice Thickness and Salinity with Wideband Microwave Radiometry.

Oguz Demir, Kenneth C. Jezek, Marco Brogioni, Giovanni Macelloni, Lars Kaleschke, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Intercomparison of Models for CYGNSS Delay-Doppler Maps at a Validation Site in the San Luis Valley of Colorado.

James D. Campbell, Ruzbeh Akbar, Amir Azemati, Alexandra Bringer, Davide Comite, Laura Dente, Scott T. Gleason, Leila Guerriero, Erik Hodges, Joel T. Johnson, Seung-Bum Kim, Amer Melebari, Nazzareno Pierdicca, Bowen Ren, Christopher S. Ruf, Leung Tsang, Haokui Xu, Jiyue Zhu, Mahta Moghaddam

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Measuring Englacial Temperatures with a Combined Radar-Radiometer.

Anna L. Broome, Dustin M. Schroeder, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Studies of Terrain Surface Roughness and its Effect on GNSS-R Systems Using Airborne Lidar Measurements.

Alexandra Bringer, Joel T. Johnson, Charles K. Toth, Christopher S. Ruf, Mahta Moghaddam

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

Analyzing the Radio Frequency Interference Environment at Cal/Val Site Locations for the Soil Moisture Active/Passive (SMAP) Mission.

Alexandra Bringer, Andreas Colliander, Joel T. Johnson, Simon Yueh, Siharth Misra

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

A Study of Front End Architectures for the PolarRad 0.5-2 GHZ Microwave Radiometer.

Mark J. Andrews, Joel T. Johnson, Matthew McLinden, Sidharth Misra

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2021

2020

Real-Time Detection and Filtering of Radio Frequency Interference Onboard a Spaceborne Microwave Radiometer: The CubeRRT Mission.

Joel T. Johnson, Christopher D. Ball, Chi-Chih Chen, Christa McKelvey, Graeme E. Smith, Mark J. Andrews, Andrew O'Brien, Joseph Landon Garry, Sidharth Misra, Rudi Bendig, Carl Felten, Shannon T. Brown, Robert Jarnot, Jonathon Kocz, Kevin Horgan, Jared F. Lucey, Joseph J. Knuble, Michael Solly, Carlos Duran-Aviles, Jinzheng Peng, Damon Bradley, Jeffrey R. Piepmeier, Doug Laczkowski, Matthew Pallas, Nick Monahan, Ervin Krauss

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2020

Track-Based Cyclone Maximum Wind Retrievals Using the Cyclone Global Navigation Satellite System (CYGNSS) Mission Full DDMs.

Mohammad M. Al-Khaldi, Joel T. Johnson, Younghun Kang, Stephen J. Katzberg, Alexandra Bringer, Ethan J. Kubatko, Dylan Wood

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2020

Geolocation, Calibration and Surface Resolution of CYGNSS GNSS-R Land Observations.

Scott Gleason, Andrew O'Brien, Anthony Russel, Mohammad M. Al-Khaldi, Joel T. Johnson

Remote. Sens., 2020

Characterizing Background Signals and Noise in Spaceborne GNSS Reflection Ocean Observations.

Scott Gleason, Joel T. Johnson, Chris Ruf, Charles Bussy-Virat

IEEE Geosci. Remote. Sens. Lett., 2020

itmlogic: The Irregular Terrain Model by Longley and Rice.

Edward J. Oughton, Tom Russell, Joel T. Johnson, Caglar Yardim, Julius Kusuma

J. Open Source Softw., 2020

Improvement of CYGNSS Level 1 Calibration Using Modeling and Measurements of Ocean Surface Mean Square Slope.

Tianlin Wang, Valery U. Zavorotny, Joel T. Johnson, Yuchan Yi, Christopher Ruf, Scott Gleason, Darren McKague, Paul A. Hwang, Erick Rogers, Shuyi Chen, Yulin Pan, Thomas Bakker

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

Characterizing the Coherent Reflected Power Dependence on Rough Surface Height at Low Signal Levels.

Ethan Raines, Joel T. Johnson, Robert J. Burkholder

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

Melt Detection Over Greenland Using Smap Radiometer Observations.

Seyedmohammad Mousavi, Andreas Colliander, Julie Z. Miller, Dara Entekhabi, Joel T. Johnson, Christopher A. Shuman, John S. Kimball, Zoe R. Courville

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

Ultra Wideband Radiometer Signatures of Arctic Sea Ice: Preliminary Results from the Mosaic Campaign.

Oguz Demir, Mark J. Andrews, Kenneth Ayotte, Lars Kaleschke, Kenneth C. Jezek, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

An Algorithm for Adaptive Determination of Radar Coherent Integration Time.

Jakob DeLong, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

The GRSS Standard for GNSS-Reflectometry.

Hugo Carreno-Luengo, Adriano Camps, Nicolas Flouri, Manuel Martín-Neira, Chris Ruf, Tianlin Wang, SiriJodha Khalsa, Maria Paola Clarizia, Jennifer Reynolds, Joel T. Johnson, Andrew O'Brien, Carmela Galdi, Maurizio di Bisceglie, Andreas Dielacher, Philip Jales, Martin Unwin, Lucinda S. King, Giuseppe Foti, Rashmi Shah, Daniel Pascual, Bill Schreiner, Milad Asgarimehr, Jens Wickert, Serni Ribó, Estel Cardellach

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

Predicting Soil Moisture Retrieval Performance for the NISAR Mission.

Alexandra Bringer, Joel T. Johnson, Rajat Bindlish

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

Monitoring Rapid Change in the Atmosphere Using Cygnss Wind Speed Measurements.

Alexandra Bringer, Mohammad M. Al-Khaldi, Joel T. Johnson, Jeonghwan Park

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

P-Band Radiometry: RFI and Calibration for Uwbrad.

Mark J. Andrews, Joel T. Johnson, Kenneth C. Jezek, Alexandra Bringer, Marco Brogioni, Giovanni Macelloni, Marion Leduc-Leballeur

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2020

2019

Development of an On-Board Wide-Band Processor for Radio Frequency Interference Detection and Filtering.

Sidharth Misra, Jonathon Kocz, Robert Jarnot, Shannon T. Brown, Rudi Bendig, Carl Felten, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2019

Remote Sensing of Sea Ice Thickness and Salinity With 0.5-2 GHz Microwave Radiometry.

Kenneth C. Jezek, Ronald Kwok, Lars Kaleschke, Domenic Belgiovane, Chi-Chih Chen, Alexandra Bringer, Joel T. Johnson, Oguz Demir, Mark J. Andrews, Giovanni Macelloni, Marco Brogioni, Marion Leduc-Leballeur, Shurun Tan, Leung Tsang

IEEE Trans. Geosci. Remote. Sens., 2019

On the Coherency of Ocean and Land Surface Specular Scattering for GNSS-R and Signals of Opportunity Systems.

Ahmed M. Balakhder, Mohammad M. Al-Khaldi, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2019

Time-Series Retrieval of Soil Moisture Using CYGNSS.

Mohammad M. Al-Khaldi, Joel T. Johnson, Andrew J. O'Brien, Anna Balenzano, Francesco Mattia

IEEE Trans. Geosci. Remote. Sens., 2019

Comparison of Maximum-Likelihood Estimation and Other Methods for Clutter Doppler Centroid Estimation.

Shanka N. Wijesundara, Kristine L. Bell, Graeme E. Smith, Andrew O'Brien, Joel T. Johnson

IEEE Trans. Aerosp. Electron. Syst., 2019

Using "Rapid Revisit" CYGNSS Wind Speed Measurements to Detect Convective Activity.

Jeonghwan Park, Joel T. Johnson, Yuchan Yi, Andrew J. O'Brien

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2019

On the Estimation of Wind Speed Diurnal Cycles Using Simulated Measurements of CYGNSS and ASCAT.

Yuchan Yi, Joel T. Johnson, Xiaochun Wang

IEEE Geosci. Remote. Sens. Lett., 2019

Swell Effects on Near-Coastal Smap L-Band High-Resolution NRCS Data.

Shanka N. Wijesundara, Joel T. Johnson

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Integration of Cygnss Wind and Wave Observations with the Wavewatch III Numerical Model.

Tianlin Wang, Valery U. Zavorotny, Joel T. Johnson, Yuchan Yi, Christopher Ruf

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Above Snow Vegetation Effects on Wideband Autocorrelation Radiometry.

Shurun Tan, Maryam Salim, Leung Tsang, Joel T. Johnson, Roger D. De Roo

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Open Source Software for Simulating Collaborative Networks of Autonomous Adaptive Sensors.

Ryan Linnabary, Andrew O'Brien, Graeme E. Smith, Christopher D. Ball, Joel T. Johnson

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Fully Adaptive Cloud Profiling Radar Simulation.

Jakob DeLong, Mohammad Abu Shattal, Andrew O'Brien, Christopher D. Ball, Joel T. Johnson, Graeme E. Smith

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

2018

Location of Radio-Frequency Interference Sources Using the SMAP L-Band Radiometer.

Yan Soldo, David M. Le Vine, Alexandra Bringer, Paolo de Matthaeis, Roger Oliva, Joel T. Johnson, Jeffrey R. Piepmeier

IEEE Trans. Geosci. Remote. Sens., 2018

500-2000-MHz Brightness Temperature Spectra of the Northwestern Greenland Ice Sheet.

Kenneth C. Jezek, Joel T. Johnson, Shurun Tan, Leung Tsang, Mark J. Andrews, Marco Brogioni, Giovanni Macelloni, Michael Durand, Chi-Chih Chen, Domenic Belgiovane, Yuna Duan, Caglar Yardim, Hongkun Li, Alexandra Bringer, Vladimir Ye. Leuski, Mustafa Aksoy

IEEE Trans. Geosci. Remote. Sens., 2018

The Ultrawideband Software-Defined Microwave Radiometer: Instrument Description and Initial Campaign Results.

Mark J. Andrews, Joel T. Johnson, Kenneth C. Jezek, Hongkun Li, Alexandra Bringer, Chi-Chih Chen, Domenic Belgiovane, Vladimir Ye. Leuski, Giovanni Macelloni, Marco Brogioni

IEEE Trans. Geosci. Remote. Sens., 2018

Foreword to the Special Issue on the 2017 IEEE International Geoscience and Remote Sensing Symposium.

Saibun Tjuatja, David Kunkee, Joel T. Johnson, Kun-Shan Chen

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2018

A Study of Cross-Polarized Sea Clutter Using the SSA2 High Frequency Approximation and the Two-Scale Model.

Shanka N. Wijesundara, Joel T. Johnson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Modeling of Sea State Conditions for Improvement of Cygnss L2 Wind Speed Retrievals.

Tianlin Wang, Valery U. Zavorotny, Joel T. Johnson, Christopher Ruf, Yuchan Yi

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Recent Advances in Smap RFI Processing.

Yan Soldo, David M. Le Vine, Alexandra Bringer, Priscilla N. Mohammed, Paolo de Matthaeis, Jeffrey R. Piepmeier, Joel T. Johnson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Fully Adaptive Remote Sensing Observing System Simulation Experiments.

Graeme E. Smith, Adam E. Mitchell, Christopher D. Ball, Andrew O'Brien, Joel T. Johnson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

CubeSat Radiometer Radio Frequency Interference Technology (CubeRRT) Validation Mission: Enabling Future Resource-Constrained Science Missions.

Sidharth Misra, Shannon T. Brown, Robert Jarnot, Carl Felten, Rudi Bendig, Jonathan Kocz, Christa McKelvey, Christopher D. Ball, Chi-Chih Chen, Andrew O'Brien, Graeme E. Smith, Mark J. Andrews, Joseph Landon Garry, Joel T. Johnson, Priscilla N. Mohammed, Jared F. Lucey, Kevin Horgan, Quenton Bonds, Carlos Duran-Aviles, Michael Solly, Jinzheng Peng, Jeffrey Piepmeier, Doug Laczkowski, Matthew Pallas, Ervin Krauss

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Testing and Operation Planning of the Cubesat Radiometer Radio Frequency Interference Technology Validation (Cuberrt) System.

Christa McKelvey, Christopher D. Ball, Chi-Chih Chen, Andrew O'Brien, Graeme E. Smith, Mark J. Andrews, Joseph Landon Garry, Joel T. Johnson, Sidharth Misra, Shannon T. Brown, Robert Jarnot, Rudi Bendig, Carl Felten, Jonathan Kocz, Kevin Horgan, Jared F. Lucey, Carlos Duran-Aviles, Michael Solly, Jinzheng Peng, Jeffrey Piepmeier, Doug Laczkowski, David Hall, Ervin Krauss

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Sentinel-1 & Sentinel-2 for SOIL Moisture Retrieval at Field Scale.

Francesco Mattia, Anna Balenzano, Giuseppe Satalino, Francesco P. Lovergine, Jian Peng, Urs Wegmüller, Oliver Cartus, Malcolm W. J. Davidson, Seung-Bum Kim, Joel T. Johnson, Jeffrey P. Walker, Xiaoling Wu, Valentijn R. N. Pauwels, Heather McNairn, Thomas Caldwell, Michael H. Cosh, Thomas J. Jackson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Cryorad: A Low Frequency Wideband Radiometer Mission for the Study of the Cryosphere.

Giovanni Macelloni, Marco Brogioni, Marion Leduc-Leballeur, Francesco Montomoli, Annett Bartsch, Arnaud Mialon, Catherine Ritz, Josep Closa Soteras, Detlef Stammer, Ghislain Picard, Giacomo De Carolis, Jacqueline Boutin, Joel T. Johnson, Keith W. Nicholls, Kenneth C. Jezek, Kimmo Rautiainen, Lars Kaleschke, Laurent Bertino, Leung Tsang, Michiel van den Broeke, Niels Skou, Steffen Tietsche

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Measurements of 0.5-2 GHz Thermal Emission Spectra from the Greenland Ice Sheet, Sea Ice, and Permafrost: Results from September 2017 Campaign.

Joel T. Johnson, Kenneth C. Jezek, Mark J. Andrews, Hongkun Li, Alexandra Bringer, Caglar Yardim, Domenic Belgiovane, Julie Z. Miller, Michael Durand, Yuna Duan, Giovanni Macelloni, Marco Brogioni, Lars Kaleschke, Shurun Tan, Leung Tsang

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Using 0.5-2 ghz Microwave Radiometry to Derive Ocean Salinity.

Oguz Demir, Alexandra Bringer, Joel T. Johnson, Mark J. Andrews, Ethan Raines, Kenneth C. Jezek, Giovanni Macelloni, Marco Brogioni

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Investigation of Spaceborne Polarimetric GNSS-R Over Land Using the Smap Radar Receiver.

Matthew Buchanan, Andrew O'Brien, Joel T. Johnson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

SMAP Mission: Changes in the RFI Environment.

Alexandra Bringer, Matthew Daehn, Joel T. Johnson, Yan Soldo, David M. Le Vine, Paolo de Matthaeis, Jeffrey R. Piepmeier, Priscilla N. Mohammed

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

Cross-Comparison of Three SAR Soil Moisture Retrieval Algorithms Using Synthetic and Experimental Data.

Anna Balenzano, Giuseppe Satalino, Francesco P. Lovergine, Francesco Mattia, Oliver Cartus, Malcolm W. J. Davidson, Muhammad A. Al-Khaldi, Joel T. Johnson

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

An Analysis of Bistatic Sea Clutter Statistics.

Ahmed M. Balakhder, Joel T. Johnson, Hongkun Li

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

GNSS-R Time-Series Soil Moisture Retrievals from Vegetated Surfaces.

Muhammad A. Al-Khaldi, Joel T. Johnson, Andrew O'Brien, Francesco Mattia, Anna Balenzano

Proceedings of the 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018

2017

A Time-Series Approach to Estimating Soil Moisture From Vegetated Surfaces Using L-Band Radar Backscatter.

Jeffrey D. Ouellette, Joel T. Johnson, Anna Balenzano, Francesco Mattia, Giuseppe Satalino, Seung-Bum Kim, Roy Scott Dunbar, Andreas Colliander, Michael H. Cosh, Todd G. Caldwell, Jeffrey P. Walker, Aaron A. Berg

IEEE Trans. Geosci. Remote. Sens., 2017

On the Amplitude Distributions of Bistatic Scattered Fields From Rough Surfaces.

Hongkun Li, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2017

Surface Soil Moisture Retrieval Using the L-Band Synthetic Aperture Radar Onboard the Soil Moisture Active-Passive Satellite and Evaluation at Core Validation Sites.

Seung-Bum Kim, Jakob J. van Zyl, Joel T. Johnson, Mahta Moghaddam, Leung Tsang, Andreas Colliander, Roy Scott Dunbar, Thomas J. Jackson, Sermsak Jaruwatanadilok, Richard D. West, Aaron Berg, Todd Caldwell, Michael H. Cosh, David C. Goodrich, Stanley Livingston, Ernesto López-Baeza, Tracy L. Rowlandson, Marc Thibeault, Jeffrey P. Walker, Dara Entekhabi, Eni G. Njoku, Peggy E. O'Neill, Simon H. Yueh

IEEE Trans. Geosci. Remote. Sens., 2017

A Study of Wind Direction Effects on Sea Surface Specular Scattering for GNSS-R Applications.

Jeonghwan Park, Joel T. Johnson

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2017

Microwave Thermal Emission Characteristics of a Two-Layer Medium With Rough Interfaces Using the Second-Order Small Perturbation Method.

Robert J. Burkholder, Joel T. Johnson, Mohammadreza Sanamzadeh, Leung Tsang, Shurun Tan

IEEE Geosci. Remote. Sens. Lett., 2017

A partial coherent model of brightness temperatures of polar ICE sheets at l band incorporating multi-layer roughness effects based on SPM2 theory.

Mohammadreza Sanamzadeh, Leung Tsang, Joel T. Johnson

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Investigating "rapid revisit" observations of cygnss.

Jeonghwan Park, Joel T. Johnson, Andrew O'Brien, Yuchan Yi

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

A study of wind direction effects on GNSS-R delay Doppler maps near the specular point.

Jeonghwan Park, Joel T. Johnson

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Comparing the cygnss simulator forward scattering model with TDS-1 and cygnss on-orbit DDMS.

Andrew O'Brien, Joel T. Johnson

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

The CubeSat Radiometer Radio Frequency Interference Technology (CubeRRT) validation mission: Performance and development of the Digital Backend technology.

Sidharth Misra, Jonathan Kocz, Carl Felten, Robert Jarnot, Rudi Bendig, Shannon T. Brown, Joel T. Johnson

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Sentinel-1 high resolution soil moisture.

Francesco Mattia, Anna Balenzano, Giuseppe Satalino, Francesco P. Lovergine, Alexander Loew, Jian Peng, Urs Wegmüller, Maurizio Santoro, Oliver Cartus, Katarzyna Dabrowska-Zielinska, Jan Pawel Musial, Malcolm W. J. Davidson, Simon Yueh, Seung-Bum Kim, Narendra N. Das, Andreas Colliander, Joel T. Johnson, Jeffrey Ouellette, Jeffrey P. Walker, Xiaoling Wu, Heather McNairn, Amine Merzouki, Jarrett Powers, Todd Caldwell, Dara Entekhabi, Michael H. Cosh, Thomas J. Jackson

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Preliminary study for a spaceborne ultrawideband microwave radiometer for the monitoring of cryosphere elements: The cryorad project.

Giovanni Macelloni, Marco Brogioni, Francesco Montomoli, Marion Leduc-Leballeur, Giacomo De Carolis, Lars Kaleschke, Joel T. Johnson, Kenneth C. Jezek

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Calibration and validation of the cygnss level 1 data products.

Scott Gleason, Christopher Ruf, Maria Paola Clarizia, Joel T. Johnson, Andrew O'Brien, Paul S. Chang, Zorana Jelenak, Faozi Said, Seubson Soisuvarn

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Performance of SMAP radiometer RFI detection algorithms and analysis of residual RFI sources.

Alexandra Bringer, Joel T. Johnson, Priscilla N. Mohammed, Jeffrey R. Piepmeier

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

Development of the cubesat radiometer radio frequency interference technology validation (cuberrt) system.

Christopher D. Ball, Chi-Chih Chen, Andrew O'Brien, Graeme E. Smith, Christa McKelvey, Mark J. Andrews, Joseph Landon Garry, Joel T. Johnson, Sidharth Misra, Shannon T. Brown, Robert Jarnot, Jonathan Kocz, Damon Bradley, Priscilla N. Mohammed, Jared F. Lucey, Kevin Horgan, Quenton Bonds, Carlos Duran-Aviles, Michael Solly, Jeffrey Piepmeier, Matthew Pallas, Ervin Krauss

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

The Ultra-Wideband Software Defined Microwave Radiometer (UWBRAD) for Ice sheet subsurface temperature sensing: Calibration and campaign results.

Mark J. Andrews, Hongkun Li, Joel T. Johnson, Kenneth C. Jezek, Alexandra Bringer, Caglar Yardim, Chi-Chih Chen, Domenic Belgiovane, Vladimir Ye. Leuski, Michael Durand, Yuna Duan, Giovanni Macelloni, Marco Brogioni, Shurun Tan, Leung Tsang

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

The ultra-wideband software defined microwave radiometer (UWBRAD) for ice sheet subsurface temperature sensing: RFI algorithms and performance.

Mark J. Andrews, Hongkun Li, Joel T. Johnson, Alexandra Bringer

Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium, 2017

2016

SMAP L-Band Microwave Radiometer: RFI Mitigation Prelaunch Analysis and First Year On-Orbit Observations.

Priscilla N. Mohammed, Mustafa Aksoy, Jeffrey R. Piepmeier, Joel T. Johnson, Alexandra Bringer

IEEE Trans. Geosci. Remote. Sens., 2016

Detection of Inland Open Water Surfaces Using Dual Polarization L-Band Radar for the Soil Moisture Active Passive Mission.

Seung-Bum Kim, Jeffrey D. Ouellette, Jakob J. van Zyl, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2016

L-Band Radio-Frequency Interference Observations During the SMAP Validation Experiment 2012.

Mustafa Aksoy, Joel T. Johnson, Sidharth Misra, Andreas Colliander, Ian O'Dwyer

IEEE Trans. Geosci. Remote. Sens., 2016

A partially coherent microwave emission model for polar ice sheets with density fluctuations and multilayer rough interfaces from 0.5 to 2 GHZ.

Leung Tsang, Tian-Lin Wang, Joel T. Johnson, Kenneth C. Jezek, Shurun Tan

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Studies of TDS-1 GNSS-R ocean altimetry using a "full DDM" retrieval approach.

Jeonghwan Park, Joel T. Johnson, Andrew O'Brien, Stephen T. Lowe

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Modeling polarimetric sea surface specular scattering for GNSS-R applications.

Jeonghwan Park, Joel T. Johnson, Jeffrey Ouellette

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Surface soil moisture retrieval using L-band SMAP SAR data and its validation.

Seung-Bum Kim, Jakob J. van Zyl, Joel T. Johnson, Mahta Moghaddam, Leung Tsang, Andreas Colliander, Roy Scott Dunbar, Thomas J. Jackson, Sermsak Jaruwatanadilok, Richard D. West, Aaron A. Berg, Todd Caldwell, Michael H. Cosh, Ernesto López-Baeza, Marc Thibeault, Jeffrey P. Walker, Dara Entekhabi, Simon Yueh

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Soil Moisture Active Passive (SMAP) microwave radiometer radio-frequency interference (RFI) mitigation: Algorithm updates and performance assessment.

Joel T. Johnson, Priscilla N. Mohammed, Jeffrey R. Piepmeier, Alexandra Bringer, Mustafa Aksoy

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

The Ultra-wideband Software-Defined Radiometer (UWBRAD) for ice sheet internal temperature sensing: Results from recent observations.

Joel T. Johnson, Kenneth C. Jezek, Mustafa Aksoy, Alexandra Bringer, Caglar Yardim, Mark J. Andrews, Chi-Chih Chen, Domenic Belgiovane, Vladimir Ye. Leuski, Michael Durand, Yuna Duan, Giovanni Macelloni, Marco Brogioni, Shurun Tan, Tian-Lin Wang, Leung Tsang

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

The CubeSat Radiometer Radio Frequency Interference Technology Validation (CubeRRT) mission.

Joel T. Johnson, Chi-Chih Chen, Andrew O'Brien, Graeme E. Smith, Christa McKelvey, Mark J. Andrews, Christopher D. Ball, Sidharth Misra, Shannon T. Brown, Jonathan Kocz, Robert Jarnot, Damon C. Bradley, Priscilla N. Mohammed, Jared F. Lucey, Jeffrey R. Piepmeier

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

Testing the feasibility of a bayesian retrieval of greenland ice sheet internal temperature from ultra-wideband software-defined microwave radiometer (UWBRAD) measurements.

Yuna Duan, Michael Durand, Kenneth C. Jezek, Caglar Yardim, Alexandra Bringer, Mustafa Aksoy, Joel T. Johnson

Proceedings of the 2016 IEEE International Geoscience and Remote Sensing Symposium, 2016

2015

Radiometric Approach for Estimating Relative Changes in Intraglacier Average Temperature.

Kenneth C. Jezek, Joel T. Johnson, Mark Drinkwater, Giovanni Macelloni, Leung Tsang, Mustafa Aksoy, Michael Durand

IEEE Trans. Geosci. Remote. Sens., 2015

A Simplified Formulation for Rough Surface Cross-Polarized Backscattering Under the Second-Order Small-Slope Approximation.

Charles-Antoine Guérin, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2015

Physical Models of Layered Polar Firn Brightness Temperatures From 0.5 to 2 GHz.

Shurun Tan, Mustafa Aksoy, Marco Brogioni, Giovanni Macelloni, Michael Durand, Kenneth C. Jezek, Tian-Lin Wang, Leung Tsang, Joel T. Johnson, Mark R. Drinkwater, Ludovic Brucker

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2015

Cognitive Radar Framework for Target Detection and Tracking.

Kristine L. Bell, Christopher J. Baker, Graeme E. Smith, Joel T. Johnson, Muralidhar Rangaswamy

IEEE J. Sel. Top. Signal Process., 2015

An intercomparison of models for predicting bistatic scattering from rough surfaces.

Caglar Yardim, Joel T. Johnson, Robert J. Burkholder, Fernando L. Teixeira, Jeffrey Ouellette, Kun-Shan Chen, Marco Brogioni, Nazzareno Pierdicca

Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium, 2015

A multistatic radar approach to soil moisture and vegetation monitoring at L band.

Nazzareno Pierdicca, Marco Brogioni, Leila Guerriero, Simonetta Paloscia, Nicolas Floury, Joel T. Johnson, Jeffrey D. Ouellette, Caglar Yardim

Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium, 2015

Real-time estimation of ocean wave fields from marine radar data.

David R. Lyzenga, Okey G. Nwogu, Robert F. Beck, Andrew O'Brien, Joel T. Johnson, Tony de Paolo, Eric Terrill

Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium, 2015

Bistatic coherent MIMO clutter rank analysis.

Kristine L. Bell, Joel T. Johnson, Christopher Baker, Graeme E. Smith, Muralidhar Rangaswamy

Proceedings of the 23rd European Signal Processing Conference, 2015

Experiments with cognitive radar.

Graeme E. Smith, Zach Cammenga, Adam E. Mitchell, Kristine L. Bell, Murali Rangaswamy, Joel T. Johnson, Christopher J. Baker

Proceedings of the 6th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, 2015

2014

Radio-Frequency Interference Mitigation for the Soil Moisture Active Passive Microwave Radiometer.

Jeffrey R. Piepmeier, Joel T. Johnson, Priscilla N. Mohammed, Damon Bradley, Christopher Ruf, Mustafa Aksoy, Rafael García, Derek Hudson, Lynn Miles, Mark Englin Wong

IEEE Trans. Geosci. Remote. Sens., 2014

A Simulation Study of Compact Polarimetry for Radar Retrieval of Soil Moisture.

Jeffrey Ouellette, Joel T. Johnson, Seung-Bum Kim, Jakob J. van Zyl, Mahta Moghaddam, Michael W. Spencer, Leung Tsang, Dara Entekhabi

IEEE Trans. Geosci. Remote. Sens., 2014

Comparison of Model Predictions With Measurements of Ku- and Ka-Band Near-Nadir Normalized Radar Cross Sections of the Sea Surface From the Genesis and Rapid Intensification Processes Experiment.

Ninoslav Majurec, Joel T. Johnson, Simone Tanelli, Stephen L. Durden

IEEE Trans. Geosci. Remote. Sens., 2014

Polarization Features in Bistatic Scattering From Rough Surfaces.

Joel T. Johnson, Jeffrey Ouellette

IEEE Trans. Geosci. Remote. Sens., 2014

Tests of the SMAP Combined Radar and Radiometer Algorithm Using Airborne Field Campaign Observations and Simulated Data.

Narendra Narayan Das, Dara Entekhabi, Eni G. Njoku, Jiancheng Shi, Joel T. Johnson, Andreas Colliander

IEEE Trans. Geosci. Remote. Sens., 2014

Simulation and analysis of polarimetric radar signatures of human gaits.

James Park, Joel T. Johnson, Ninoslav Majurec, Mark Frankford, Kyle B. Stewart, Graeme E. Smith, Lamar Westbrook

IEEE Trans. Aerosp. Electron. Syst., 2014

Numerical and experimental studies of target detection with MIMO radar.

Mark T. Frankford, Kyle B. Stewart, Ninoslav Majurec, Joel T. Johnson

IEEE Trans. Aerosp. Electron. Syst., 2014

Understanding SMOS data in Antarctica.

Giovanni Macelloni, Marco Brogioni, Mustafa Aksoy, Joel T. Johnson, Kenneth C. Jezek, Mark Drinkwater

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

Radio frequency interference observations using an L-Band direct sampling receiver during the SMAPVEX12 airborne campaign.

Mustafa Aksoy, Joel T. Johnson, Sidharth Misra

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

An examination of multi-frequency microwave radiomtry for probing subsurface ice sheet temperature.

Mustafa Aksoy, Joel T. Johnson, Kenneth C. Jezek, Mchael Durad, Mark R. Drinkwater, Govanni Macellonf, Leung Tsang

Proceedings of the 2014 IEEE Geoscience and Remote Sensing Symposium, 2014

2013

A Study of Sea Surface Range-Resolved Doppler Spectra Using Numerically Simulated Low-Grazing-Angle Backscatter Data.

Chun-Sik Chae, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2013

A Comparative Analysis of Low-Level Radio Frequency Interference in SMOS and Aquarius Microwave Radiometer Measurements.

Mustafa Aksoy, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2013

A Study of Sea Surface Wind Vector Estimation From Near-Nadiral Cross-Track-Scanned Backscatter Data.

Alexey Nekrasov, Jeffrey Ouellette, Ninoslav Majurec, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2013

A Study of SMOS RFI Over North America.

Mustafa Aksoy, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2013

SMAP RFI mitigation algorithm performance characterization using airborne high-rate direct-sampled SMAPVEX 2012 data.

Sidharth Misra, Joel T. Johnson, Mustafa Aksoy, Jinzheng Peng, Damon Bradley, Ian O'Dwyer, Sharmila Padmanabhan, Douglas E. Dawson, Seth L. Chazanoff, Barron Latham, Todd Gaier, Caroline Flores-Helizon, Richard F. Denning

Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium, 2013

2012

Soil Moisture Retrieval Using Time-Series Radar Observations Over Bare Surfaces.

Seung-Bum Kim, Leung Tsang, Joel T. Johnson, Shaowu Huang, Jakob J. van Zyl, Eni G. Njoku

IEEE Trans. Geosci. Remote. Sens., 2012

A Study of the Fourth-Order Small Perturbation Method for Scattering From Two-Layer Rough Surfaces.

Metin A. Demir, Joel T. Johnson, Tom J. Zajdel

IEEE Trans. Geosci. Remote. Sens., 2012

Assessment of the impacts of radio frequency interference on SMAP radar and radiometer measurements.

Curtis W. Chen, Jeffrey R. Piepmeier, Joel T. Johnson, Hirad Ghaemi

Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, 2012

An experimental and theoretical study on the sensitivity of cross-polarized backscatter to soil moisture.

Anna Balenzano, Francesco Mattia, Giuseppe Satalino, Jeffrey Ouellette, Joel T. Johnson

Proceedings of the 2012 IEEE International Geoscience and Remote Sensing Symposium, 2012

2011

Airborne L-Band Radio Frequency Interference Observations From the SMAPVEX08 Campaign and Associated Flights.

James Park, Joel T. Johnson, Ninoslav Majurec, Noppasin Niamsuwan, Jeffrey R. Piepmeier, Priscilla N. Mohammed, Christopher S. Ruf, Sidharth Misra, Simon Yueh, Steve J. Dinardo

IEEE Trans. Geosci. Remote. Sens., 2011

A Study of Interferometric Phase Statistics and Accuracy for Sea Surface Height Retrievals from Numerically Simulated Low-Grazing-Angle Backscatter Data.

Chun-Sik Chae, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2011

Radio frequency interference mitigation for the planned SMAP radar and radiometer.

Michael W. Spencer, Samuel F. Chan, Eric Belz, Jeffrey Piepmeier, Priscilla N. Mohammed, Edward Kim, Joel T. Johnson

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

Soil moisture retrieval over low-vegetation surfaces using time-series radar observations and a lookup table representation of forward scattering.

Seung-Bum Kim, Shaowu Huang, Leung Tsang, Joel T. Johnson, Eni G. Njoku

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

Studies of radio frequency interference in SMOS observations.

Joel T. Johnson, Mustafa Aksoy

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

A study of sea surface height retrieval using Doppler measurements from numerically simulated low grazing angle backscatter data.

Chun-Sik Chae, Joel T. Johnson

Proceedings of the 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011

MIMO radar target measurements.

Kyle B. Stewart, Mark Frankford, Joel T. Johnson, Emre Ertin

Proceedings of the Conference Record of the Forty Fifth Asilomar Conference on Signals, 2011

2010

A Monte Carlo Study of Altimeter Pulse Returns and the Electromagnetic Bias.

Praphun Naenna, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2010

Performance Study of a Cross-Frequency Detection Algorithm for Pulsed Sinusoidal RFI in Microwave Radiometry.

Baris Guner, Noppasin Niamsuwan, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2010

Compensation of Faraday Rotation in Multipolarization Scatterometry.

Mark Frankford, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2010

Including Spatial Correlations in the Statistical MIMO Radar Target Model.

Mark Frankford, Joel T. Johnson, Emre Ertin

IEEE Signal Process. Lett., 2010

The Soil Moisture Active Passive (SMAP) Mission.

Dara Entekhabi, Eni G. Njoku, Peggy O'Neill, Kent H. Kellogg, Wade T. Crow, Wendy N. Edelstein, Jared Entin, Shawn D. Goodman, Thomas J. Jackson, Joel T. Johnson, John S. Kimball, Jeffrey R. Piepmeier, Randal D. Koster, Neil Martin, Kyle McDonald, Mahta Moghaddam, Mary Susan Moran, Rolf Reichle, Jiancheng Shi, Michael W. Spencer, Samuel W. Thurman, Leung Tsang, Jakob J. van Zyl

Proc. IEEE, 2010

Deriving soil moisture with the combined L-band radar and radiometer measurements.

Jiancheng Shi, Kun-Shan Chen, Leung Tsang, Thomas J. Jackson, Eni G. Njoku, Jakob J. van Zyl, Peggy O'Neill, Dara Entekhabi, Joel T. Johnson, Mahta Moghaddam

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2010

2009

Microwave Radiometer Radio-Frequency Interference Detection Algorithms: A Comparative Study.

Sidharth Misra, Priscilla N. Mohammed, Baris Güner, Christopher S. Ruf, Jeffrey R. Piepmeier, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2009

Performance Study of Algorithms for Detecting Pulsed Sinusoidal Interference in Microwave Radiometry.

Joel T. Johnson, Lee C. Potter

IEEE Trans. Geosci. Remote. Sens., 2009

Through-Wall Sensing With Multifrequency Microwave Radiometry: A Proof-of-Concept Demonstration.

Joel T. Johnson, Metin A. Demir, Ninoslav Majurec

IEEE Trans. Geosci. Remote. Sens., 2009

A Numerical Study of the Retrieval of Sea Surface Height Profiles From Low Grazing Angle Radar Data.

Joel T. Johnson, Robert J. Burkholder, Jakov V. Toporkov, David Lyzenga, William J. Plant

IEEE Trans. Geosci. Remote. Sens., 2009

A Study of the Shapiro-Wilk Test for the Detection of Pulsed Sinusoidal Radio Frequency Interference.

Baris Güner, Mark Frankford, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2009

Airborne L-band RFI Observations in the smapvex08 Campaign with the L-band Interference Suppressing Radiometer.

Ninoslav Majurec, James Park, Noppasin Niamsuwan, Mark Frankford, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2009

Performance Analysis of a Cross-frequency Detector of Pulsed Sinusoidal RFI in Microwave Radiometry.

Baris Guner, Joel T. Johnson, Ninoslav Majurec

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2009

2008

A Numerical Method for Studying Modulation Effects in Radar Observations of the Sea Surface.

Guangdong Pan, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2008

Low Frequency Sea and Ice Sheet Impulse Responses Acquired by the Global Ice Sheet Mapping Orbiter (GISMO) Demonstrator.

Noppasin Niamsuwan, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

Monte Carlo Simulation of Altimeter Pulse Returns and Electromagnetic Bias.

Praphun Naenna, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

A Study of Algorithms for Detecting Pulsed Sinusoidal Interference in Microwave Radiometry.

Joel T. Johnson, Lee C. Potter

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

On the Shapiro-Wilk Test for the Detection of Pulsed Sinusoidal Radio Frequency Interference.

Baris Guner, Mark Frankford, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

Compensation of Faraday Rotation in Multi-Polarization Scatterometry.

Mark Frankford, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2008

2007

On the Geometrical Optics (Hagfors' Law) and Physical Optics Approximations for Scattering From Exponentially Correlated Surfaces.

Joel T. Johnson, Karl F. Warnick, Peng Xu

IEEE Trans. Geosci. Remote. Sens., 2007

Computation of Oceanlike Surface Thermal Emission and Bistatic Scattering With the Reduced Local Curvature Approximation.

Joel T. Johnson, Tanos M. Elfouhaily

IEEE Trans. Geosci. Remote. Sens., 2007

Time and Frequency Blanking for Radio-Frequency Interference Mitigation in Microwave Radiometry.

Baris Güner, Joel T. Johnson, Noppasin Niamsuwan

IEEE Trans. Geosci. Remote. Sens., 2007

A New Model for Rough Surface Scattering.

Tanos M. Elfouhaily, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2007

Fourth-Order Small-Slope Theory of Sea-Surface Brightness Temperatures.

Metin A. Demir, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2007

Band-Limited Exponential Correlation Function for Rough-Surface Scattering.

Alongkorn Darawankul, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2007

Foreword to the Special Issue on Subsurface Sensing Using Ground-Penetrating Radar (GPR).

Chi-Chih Chen, Joel T. Johnson, Motoyuki Sato, Alexander G. Yarovoy

IEEE Trans. Geosci. Remote. Sens., 2007

Cross frequency blanking for RFI mitigation: A C-band case study.

Joel T. Johnson, Baris Guner

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2007

The reduced local curvature approximation for rough surface scattering.

Tanos M. Elfouhaily, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2007

2006

A numerical study of the modulation of ShortSea waves by longer waves.

Guangdong Pan, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2006

Airborne radio-frequency interference studies at C-band using a digital receiver.

Joel T. Johnson, Albin J. Gasiewski, Baris Güner, Grant A. Hampson, Steven W. Ellingson, Rangarajan Krishnamachari, Noppasin Niamsuwan, Eric M. McIntyre, Marian Klein, Vladimir Ye. Leuski

IEEE Trans. Geosci. Remote. Sens., 2006

An efficient two-scale model for the computation of thermal emission and atmospheric reflection from the sea surface.

Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2006

A polarimetric survey of radio-frequency interference in C- and X-bands in the continental united states using WindSat radiometry.

Steven W. Ellingson, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2006

A Numerical Study of the Modulation of Short Sea Waves by Longer Waves.

Guangdong Pan, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

Studies of Ocean Surface Profile Retrieval from Simulated LGA Radar Data.

Guangdong Pan, Robert J. Burkholder, Joel T. Johnson, Jakov V. Toporkov, Mark A. Sletten

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

Observations of an ARSR System in Canton, MI with the L-band Interference Suppressing Radiometer.

Noppasin Niamsuwan, Baris Güner, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

A Study of Wind Direction Signals in WindSat Linearly Polarized Channels.

Praphun Naenna, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

High Altitude Measurements of C-band Radio Frequency Interference Using a Digital Receiver.

Joel T. Johnson, Albin J. Gasiewski, Baris Güner, M. Valerio, Marian Klein

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

Comparison of Surface Scattering Models for Gaussian and Exponential Surfaces.

Alongkorn Darawankul, Joel T. Johnson, Kun-Shan Chen

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2006

2005

A study of ocean-like surface thermal emission and reflection using Voronovich's small slope approximation.

Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2005

Sky observations at L-band with an interference suppressing microwave radiometer.

Noppasin Niamsuwan, Joel T. Johnson

Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 2005

2004

A numerical study of buried biomass effects on ground-penetrating radar performance.

Nakasit Niltawach, Chi-Chih Chen, Joel T. Johnson, Brian A. Baertlein

IEEE Trans. Geosci. Remote. Sens., 2004

A study of scattering from an object below a rough surface.

Joel T. Johnson, Robert J. Burkholder

IEEE Trans. Geosci. Remote. Sens., 2004

Optical theorem for electromagnetic scattering by a three-dimensional scatterer in the presence of a lossless half space.

Danai Torrungrueng, Baran U. Ungan, Joel T. Johnson

IEEE Geosci. Remote. Sens. Lett., 2004

Design and demonstration of an interference suppressing microwave radiometer.

Joel T. Johnson, Grant A. Hampson, Steven W. Ellingson

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

Airborne radio frequency interference studies at C-band using a digital receiver.

Joel T. Johnson, Albin J. Gasiewski, Grant A. Hampson, Steven W. Ellingson, Rangarajan Krishnamachari, Marian Klein

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

A study of rough surface thermal emission and reflection using Voronovich's small slope approximation.

Joel T. Johnson

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

Calculation of the fourth order small slope theory of thermal emission from the sea surface.

Metin A. Demir, Joel T. Johnson

Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004

2003

Further numerical studies of backscattering from time-evolving nonlinear sea surfaces.

Alfonso R. Hayslip, Joel T. Johnson, Gregory R. Baker

IEEE Trans. Geosci. Remote. Sens., 2003

Gender, Rationality, and Base-Rate Explanations for Increasing Trends.

Charles R. Berger, Eun-Ju Lee, Joel T. Johnson

Commun. Res., 2003

Antidotes for Anthrax Anecdotes.

Charles R. Berger, Joel T. Johnson, Eun-Ju Lee

Commun. Res., 2003

A study of sea emission models for WindSat.

Joel T. Johnson, W. H. Theunissen, Steven W. Ellingson

Proceedings of the 2003 IEEE International Geoscience and Remote Sensing Symposium, 2003

Design of an L-band microwave radiometer with active mitigation of interference.

Steven W. Ellingson, Grant A. Hampson, Joel T. Johnson

Proceedings of the 2003 IEEE International Geoscience and Remote Sensing Symposium, 2003

Characterization of L-band RFI and implications for mitigation techniques.

Steven W. Ellingson, Grant A. Hampson, Joel T. Johnson

Proceedings of the 2003 IEEE International Geoscience and Remote Sensing Symposium, 2003

2002

Radar image study of simulated breaking waves.

Hyunjun Kim, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2002

Subsurface object sensing with a multifrequency microwave radiometer.

Joel T. Johnson, Hyunjun Kim, David R. Wiggins, Yonghun Cheon

IEEE Trans. Geosci. Remote. Sens., 2002

A theoretical study of sea surface up/down wind brightness temperature differences.

Joel T. Johnson, Yongyao Cai

IEEE Trans. Geosci. Remote. Sens., 2002

Comparison of the physical optics and small slope theories for polarimetric thermal emission from the sea surface.

Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2002

Sub-surface object sensing with multi-frequency microwave radiometry.

David R. Wiggins, Hyunjun Kim, Yonghun Cheon, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002

Further numerical studies of backscattering from time evolving non-linear sea surfaces.

Alfonso R. Hayslip, Joel T. Johnson, Gregory R. Baker

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002

Implementation of the higher order small slope approximation for scattering from a Gaussian rough surface.

M. S. Gilbert, Joel T. Johnson

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002

Remote sensing of rough surface spectra with multi-frequency microwave radiometry.

Yonghun Cheon, Joel T. Johnson, David R. Wiggins

Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, 2002

2001

Comparison of modeled and measured second azimuthal harmonics of ocean surface brightness temperatures.

Min Zhang, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2001

A numerical study of backscattering from time-evolving sea surfaces: comparison of hydrodynamic models.

Joel T. Johnson, Jakov V. Toporkov, Gary S. Brown

IEEE Trans. Geosci. Remote. Sens., 2001

Coupled canonical grid/discrete dipole approach for computing scattering from objects above or below a rough interface.

Joel T. Johnson, Robert J. Burkholder

IEEE Trans. Geosci. Remote. Sens., 2001

Thermal emission from a layered medium bounded by a slightly rough interface.

Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2001

2000

Time statistics of propagation over the ocean surface: a numerical study.

Baran U. Ungan, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2000

A novel acceleration algorithm for the computation of scattering from two-dimensional large-scale perfectly conducting random rough surfaces with the forward-backward method.

Danai Torrungrueng, Hsi-Tseng Chou, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2000

A numerical model for electromagnetic scattering from sea ice.

Elias M. Nassar, Joel T. Johnson, Robert Lee

IEEE Trans. Geosci. Remote. Sens., 2000

High resolution Ka-band images of a small tree: measurements and models.

Hyunjun Kim, Joel T. Johnson, Brian A. Baertlein

IEEE Trans. Geosci. Remote. Sens., 2000

Formulation of forward-backward method using novel spectral acceleration for the modeling of scattering from impedance rough surfaces.

Hsi-Tseng Chou, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 2000

1999

Theoretical study of the small slope approximation for ocean polarimetric thermal emission.

Joel T. Johnson, Min Zhang

IEEE Trans. Geosci. Remote. Sens., 1999

A numerical study of ocean polarimetric thermal emission.

Joel T. Johnson, Robert T. Shin, Jin Au Kong, Leung Tsang, Kyung Pak

IEEE Trans. Geosci. Remote. Sens., 1999

1998

A numerical study of the composite surface model for ocean backscattering.

Joel T. Johnson, Robert T. Shin, Jin Au Kong, Leung Tsang, Kyung Pak

IEEE Trans. Geosci. Remote. Sens., 1998

1996

Applications of numerical models for rough surface scattering.

Joel T. Johnson

PhD thesis, 1996

1993

Third Stokes parameter emission from a periodic water surface.

Joel T. Johnson, Jin Au Kong, Robert T. Shin, David H. Staelin, Kevin O'Neill, A. W. Lananick

IEEE Trans. Geosci. Remote. Sens., 1993

Statistical temperature profile retrievals in clear-air using passive 118-GHz O₂ observations.

Albin J. Gasiewski, Joel T. Johnson

IEEE Trans. Geosci. Remote. Sens., 1993