Andrew O'Brien

According to our database, Andrew O'Brien authored at least 59 papers between 2011 and 2023.

Collaborative distances:

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

2023

Comparison of GNSS-R Coherent Reflection Detection Algorithms Using Simulated and Measured CYGNSS Data.

Eric Loria, Ilaria Mara Russo, Yang Wang, Generoso Giangregorio, Carmela Galdi, Maurizio di Bisceglie, Brandi Wilson-Downs, Marco Lavalle, Andrew J. O'Brien, Y. Jade Morton, Cinzia Zuffada

IEEE Trans. Geosci. Remote. Sens., 2023

Assessing the Relative Performance of GNSS-R Flood Extent Observations: Case Study in South Sudan.

Brandi Downs, Albert J. Kettner, Bruce D. Chapman, G. Robert Brakenridge, Andrew J. O'Brien, Cinzia Zuffada

IEEE Trans. Geosci. Remote. Sens., 2023

2022

Dynamic Calibration of GPS Effective Isotropic Radiated Power for GNSS-Reflectometry Earth Remote Sensing.

Tian-Lin Wang, Christopher S. Ruf, Scott Gleason, Andrew J. O'Brien, Darren S. McKague, Bruce P. Block, Anthony Russel

IEEE Trans. Geosci. Remote. Sens., 2022

Comparison of SAR and CYGNSS Surface Water Extent Metrics.

Bruce D. Chapman, Ilaria Mara Russo, Carmela Galdi, Mary Morris, Maurizio di Bisceglie, Cinzia Zuffada, Brandi Downs, Marco Lavalle, Eric Loria, Andrew J. O'Brien

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2022

Retrieval of Dynamic Changes of Surface Water Extent from Sparse GNSS-R Measurements Using a Model-Driven Approach.

Brandi Wilson-Downs, Andrew O'Brien, Cinzia Zuffada

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

CYGNSS Flood Applications to Support the United Nations Sustainable Development Goals.

Brandi Wilson-Downs, Albert J. Kettner, G. Robert Brakenridge, Andrew O'Brien, Cinzia Zuffada

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

Rongowai: A Pathfinder NASA/NZ GNSS-R Initiative Supporting SDG-15 - Life on Land.

Delwyn Moller, Matthew Wilson, Rajasweta Datta, Andrew O'Brien, Ryan Linnabary, Chris Ruf

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

Modeling GNSS-R Coherent Scattering from Surface Waters with Wind, Waves, and Vegetation.

Eric Loria, Cinzia Zuffada, Andrew O'Brien

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

Computing Specular Points Over Complex Land Surfaces for Airborne GNSS-R Applications.

Xiaoyou Lin, Delwyn Moller, Andrew O'Brien, Ryan Linnabary, Chris Ruf

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

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

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

State of the Art in GNSS-R Capabilities Over Inland Waters.

Cinzia Zuffada, Brandi Downs, Ilaria Mara Russo, Eric Loria, Andrew O'Brien, Carmela Galdi, Maurizio di Bisceglie, Valery U. Zavorotny, Marco Lavalle, Mary Morris

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

The Important Role of Antenna Pattern Characterization in the Absolute Calibration of GNSS-R Measurements.

Tianlin Wang, Christopher Ruf, Darren McKague, Anthony Russel, Andrew O'Brien, Scott Gleason

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

Overcoming the Current Limitations of GNSS-R Observation of Wetlands and Surface Water.

Andrew O'Brien, Eric Loria

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

Operational Airborne GNSS-R Aboard Air New Zealand Domestic Aircraft.

Delwyn Moller, Chris Ruf, Ryan Linnabary, Andrew O'Brien, Stephen B. Musko

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

Water Depth Retrieval in the Everglades Using Cygnss.

Brandi Downs, Andrew O'Brien, Mary Morris, Cinzia Zuffada

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

2020

Improved GNSS-R Ocean Surface Altimetry With CYGNSS in the Seas of Indonesia.

Jake Mashburn, Penina Axelrad, Cinzia Zuffada, Eric Loria, Andrew O'Brien, Bruce J. Haines

IEEE Trans. Geosci. Remote. Sens., 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

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

Investigation of Coherent and Incoherent Scattering from Lakes Using Cygnss Observations.

Valery U. Zavorotny, Eric Loria, Andrew O'Brien, Brandi Downs, Cinzia Zuffada

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

Monitoring GPS Eirp for Cygnss Level 1 Calibration.

Tianlin Wang, Christopher Ruf, Scott Gleason, Darren McKague, Andrew O'Brien, Bruce P. Block

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

Next Generation GNSS-R Instrument.

Christopher Ruf, Roger Backhus, Timothy Butler, Chi-Chih Chen, Scott Gleason, Eric Loria, Darren McKague, Ryan Miller, Andrew O'Brien, Line van Nieuwstadt

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

Wind Vector and Wave Height Retrieval in Inland Waters Using CYGNSS.

Eric Loria, Andrew O'Brien, Valery U. Zavorotny, Cinzia Zuffada

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

An Adaptive Integration Algorithm for Improved Coherent Reflection Measurement in GNSS-R Instruments.

Eric Loria, Andrew O'Brien

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

Analysis of GNSS-R Coverage by a Regional Aircraft Fleet.

Ryan Linnabary, Andrew O'Brien, Chris Ruf, Stephen B. Musko, Delwyn Moller

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

Simulation Study of Cygnss Observability of Dynamic Inundation Events.

Brandi Downs, Eric Loria, Andrew O'Brien, Valery U. Zavorotny, Cinzia Zuffada

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

Improved Orbit Determination of the CYGNSS Satellites and its Application to GNSS-R Ocean Altimetry.

Alex Conrad, Penina Axelrad, Cinzia Zuffada, Bruce J. Haines, Andrew O'Brien, Eric Loria

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

2019

Sequential Processing of GNSS-R Delay-Doppler Maps to Estimate the Ocean Surface Wind Field.

Feixiong Huang, James L. Garrison, Nereida Rodriguez-Alvarez, Andrew J. O'Brien, Kaitie M. Schoenfeldt, Soon Chye Ho, Han Zhang

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

The CYGNSS Level 1 Calibration Algorithm and Error Analysis Based on On-Orbit Measurements.

Scott Gleason, Christopher S. Ruf, Andrew J. O'Brien, Darren S. McKague

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

A Real-Time EIRP Level 1 Calibration Algorithm for the CYGNSS Mission Using the Zenith Measurements.

Tianlin Wang, Christopher Ruf, Scott Gleason, Bruce P. Block, Darren McKague, Andrew O'Brien

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

Analysis of Wetland Extent Retrieval Accuracy Using Cygnss.

Eric Loria, Andrew O'Brien, Valery U. Zavorotny, Marco Lavalle, Clara C. Chew, Rashmi Shah, Cinzia Zuffada

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

Towards An Ocean Altimetry Product Using Cygnss.

Eric Loria, Jake Mashburn, Andrew O'Brien, Penina Axelrad, Cinzia Zuffada, Zhijin Li

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

Exploiting Terrestrial Positioning Signals to Enable a Low-Cost Passive Radar.

Václav Navrátil, Joseph Landon Garry, Andrew J. O'Brien, Graeme E. Smith

IEEE Trans. Aerosp. Electron. Syst., 2018

Assessing the Altimetric Measurement from CYGNSS Data.

Cinzia Zuffada, Bruce J. Haines, George Hajj, Zhijin Li, Stephen T. Lowe, Rashmi Shah, Jake Mashburn, Penina Axelrad, Andrew O'Brien, Paolo Cipollini, Valery U. Zavorotny, Alexander G. Voronovich

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

Comparison of Wide Bandwidth Conventional and Interferometric GNSS-R Techniques for Possible CYGNSS Follow-On Mission.

Rachel Norris, Chris Ruf, Eric Loria, Andrew O'Brien

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

A Comparison of Waveform Model Re-Tracking Methods Using Data from CYGNSS.

Jake Mashburn, Andrew O'Brien, Penina Axelrad, Cinzia Zuffada, Stephen T. Lowe, Rashmi Shah, Alexander G. Voronovich, Valery U. Zavorotny

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

Detection & Separation of Coherent Reflections in GNSS-R Measurements Using CYGNSS Data.

Eric Loria, Andrew O'Brien, Inder J. Gupta

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

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

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

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

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

Investigation of spaceborne polarimetric GNSS-R using the SMAP radar instrument.

Matthew Buchanan, Andrew O'Brien

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

2016

Calibration and Unwrapping of the Normalized Scattering Cross Section for the Cyclone Global Navigation Satellite System.

Scott Gleason, Christopher S. Ruf, Maria Paola Clarizia, Andrew J. O'Brien

IEEE Trans. Geosci. Remote. Sens., 2016

Small and Adaptive Antennas and Arrays for GNSS Applications.

John L. Volakis, Andrew J. O'Brien, Chi-Chih Chen

Proc. IEEE, 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

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

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

2011

Mitigation of Adaptive Antenna Induced Bias Errors in GNSS Receivers.

Andrew J. O'Brien, Inder J. Gupta

IEEE Trans. Aerosp. Electron. Syst., 2011