Contribution of chlorophyll fluorescence to the reflectance of corn foliage. - Petya K. E. Campbell; Elizabeth M. Middleton; Lawrence A. Corp; James E. McMurtrey; Moon S. Kim; Emmett W. Chappelle; L. Maryn Butcher (IGARSS, 2002)

Fluorescence imaging techniques for monitoring vegetation. - Lawrence A. Corp; Elizabeth M. Middleton; James E. McMurtrey; Petya K. E. Campbell; M. S. Kim; Emmett W. Chappelle; L. Maryn Butcher (IGARSS, 2002)

Fluorescence responses from nitrogen plant stress in 4 Fraunhofer band regions. - James E. McMurtrey; Elizabeth M. Middleton; Lawrence A. Corp; Petya K. E. Campbell; L. Maryn Butcher; Emmett W. Chappelle; W. B. Cook (IGARSS, 2002)

"Red edge" optical properties of corn leaves from different nitrogen regimes. - Elizabeth M. Middleton; Petya K. E. Campbell; James E. McMurtrey; Lawrence A. Corp; L. Maryn Butcher; Emmett W. Chappelle (IGARSS, 2002)

Optical reflectance and fluorescence for detecting nitrogen needs in Zea mays L. - James E. McMurtrey; Elizabeth M. Middleton; Lawrence A. Corp; Petya K. E. Campbell; L. Maryn Butcher; Craig S. T. Daughtry (IGARSS, 2003)

Foliar reflectance and fluorescence responses for plants under nitrogen stress determined with active and passive systems. - Elizabeth M. Middleton; James E. McMurtrey; Petya K. E. Campbell; Lawrence A. Corp; L. Maryn Butcher; E. W. Chapelle (IGARSS, 2003)

Solar Induced Fluorescence and Reflectance Sensing Techniques for Monitoring Nitrogen Utilization in Corn. - Lawrence A. Corp; Elizabeth M. Middleton; Craig S. T. Daughtry; Petya K. E. Campbell (IGARSS, 2006)

Canopy level solar induced fluorescence for vegetation in controlled experiments. - Elizabeth M. Middleton; Lawrence A. Corp; Petya K. E. Campbell (IGARSS, 2007)

Data Quality Guidelines for GEOSS Consideration-The CEOS Working Group on Calibration and Validation (WGCV). - Stephen G. Ungar; Petya K. E. Campbell; Michael Rast; S. Geneva; Changyong Cao (IGARSS, 2007)

Foliar Bio-Physical and Spectral Properties Associated with Light Environment in a Mature Poplar Stand. - Petya K. E. Campbell; Elizabeth M. Middleton; Lawrence A. Corp; Yen-Ben Cheng; Karl Fred Huemmrich; Geoffrey G. Parker 002 (IGARSS (2), 2008)

Toward Consistent Satellite Calibration and Validation for GEOSS Interoperability. - Changyong Cao; Stephen G. Ungar; Pascal Lecomte; Nigel P. Fox; Xiaoxiong (Jack) Xiong; Patrice Henry; Christopher Buck; Greg Stenssas; Xiwu Zhan; Petya K. E. Campbell (IGARSS (1), 2008)

Comparisons between in Situ Anisotropic Reflectance Measurements and Simulations for Vegetation Canopies: Validation and Sensitivity Analysis. - Yen-Ben Cheng; Lawrence A. Corp; Elizabeth M. Middleton; Karl Fred Huemmrich; Qingyuan Zhang; Petya K. E. Campbell; Geoffrey G. Parker 002 (IGARSS (3), 2008)

Impact of Spectral Resolution on Solar Induced Fluorescence and Reflectance Indices for Monitoring Vegetation. - Lawrence A. Corp; Elizabeth M. Middleton; Yen-Ben Cheng; Petya K. E. Campbell; Karl Fred Huemmrich (IGARSS (4), 2008)

Applications using EO-1 hyperion AT-sensor and surface reflectance: comparisons and case studies. - Yen-Ben Cheng; Elizabeth M. Middleton; Qingyuan Zhang; Stephen G. Ungar; Petya K. E. Campbell (IGARSS, 2010)

Fusion: A fully ultraportable system for imaging objects in nature. - Lawrence A. Corp; Bruce D. Cook; Elizabeth M. Middleton; Yen-Ben Cheng; Karl Fred Huemmrich; Petya K. E. Campbell (IGARSS, 2010)

Forecasting corn yield with imaging spectroscopy. - Lawrence A. Corp; Elizabeth M. Middleton; Craig S. T. Daughtry; Andrew L. Russ; Petya K. E. Campbell; Karl Fred Huemmrich; Yen-Ben Cheng (IGARSS, 2010)

Using EO-1 Hyperion images to prototype environmental products for HyspIRI. - Elizabeth M. Middleton; Petya K. E. Campbell; Stephen G. Ungar; Lawrence Ong; Qingyuan Zhang; Karl Fred Huemmrich; Daniel J. Mandl; Stuart Frye (IGARSS, 2010)

Utilizing in situ directional hyperspectral measurements to validate bio-indicator simulations for a corn crop canopy. - Yen-Ben Cheng; Elizabeth M. Middleton; Karl Fred Huemmrich; Qingyuan Zhang; Petya K. E. Campbell; Lawrence A. Corp; Andrew L. Russ; William P. Kustas (Ecol. Informatics, 2010)

Canopy level Chlorophyll Fluorescence and the PRI in a cornfield. - Elizabeth M. Middleton; Yen-Ben Cheng; Lawrence A. Corp; Petya K. E. Campbell; Karl Fred Huemmrich; Qingyuan Zhang; William P. Kustas (IGARSS, 2012)

Integrating Solar Induced Fluorescence and the Photochemical Reflectance Index for Estimating Gross Primary Production in a Cornfield. - Yen-Ben Cheng; Elizabeth M. Middleton; Qingyuan Zhang; Karl Fred Huemmrich; Petya K. E. Campbell; Lawrence A. Corp; Bruce D. Cook; William P. Kustas; Craig S. T. Daughtry (Remote. Sens., 2013)

EO-1 Hyperion Reflectance Time Series at Calibration and Validation Sites: Stability and Sensitivity to Seasonal Dynamics. - Petya K. E. Campbell; Elizabeth M. Middleton; Kurt J. Thome; Raymond F. Kokaly; Karl Fred Huemmrich; David Lagomasino; Kimberly A. Novick; Nathaniel A. Brunsell (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2013)

Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties. - Karl Fred Huemmrich; John A. Gamon; Craig E. Tweedie; Petya K. E. Campbell; David R. Landis; Elizabeth M. Middleton (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2013)

The Earth Observing One (EO-1) Satellite Mission: Over a Decade in Space. - Elizabeth M. Middleton; Stephen G. Ungar; Daniel J. Mandl; Lawrence Ong; Stuart W. Frye; Petya K. E. Campbell; David R. Landis; Joseph P. Young; Nathan H. Pollack (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2013)

Novel leaf-level measurements of chlorophyll fluorescence for photosynthetic efficiency. - Elizabeth M. Middleton; Tommaso Julitta; Petya K. E. Campbell; Karl Fred Huemmrich; Anke Schickling; Micol Rossini; Sergio Cogliati; David R. Landis; Luis Alonso 002 (IGARSS, 2015)

Monitoring Orbital Precession of EO-1 Hyperion With Three Atmospheric Correction Models in the Libya-4 PICS. - Christopher S. R. Neigh; Joel McCorkel; Petya K. E. Campbell; Lawrence Ong; Vuong Ly; David R. Landis; Elizabeth M. Middleton (IEEE Geosci. Remote. Sens. Lett., 2016)

Detection of Spatio-Temporal Changes of Norway Spruce Forest Stands in Ore Mountains Using Landsat Time Series and Airborne Hyperspectral Imagery. - Jan Misurec; Veronika Kopacková; Zuzana Lhotáková; Petya K. E. Campbell; Jana Albrechtová (Remote. Sens., 2016)

Hyperion: The first global orbital spectrometer, earth observing-1 (EO-1) satellite (2000-2017). - Elizabeth M. Middleton; Petya K. E. Campbell; Lawrence Ong; David R. Landis; Qingyuan Zhang; Christopher S. R. Neigh; Karl Fred Huemmrich; Stephen G. Ungar; Daniel J. Mandl; Stuart W. Frye; Vuong Ly; Patrice Cappelaere; et al. (IGARSS, 2017)

Oxygen transmittance correction for solar-induced chlorophyll fluorescence measured on proximal sensing: Application to the NASA-GSFC fusion tower. - Neus Sabater; Elizabeth M. Middleton; Zbynek Malenovský; Luis Alonso 002; Jochem Verrelst; Karl Fred Huemmrich; Petya K. E. Campbell; William P. Kustas; Jorge Vicent 001; Shari Van Wittenberghe; José F. Moreno (IGARSS, 2017)

EO-1 Data Quality and Sensor Stability with Changing Orbital Precession at the End of a 16 Year Mission. - Shannon Franks; Christopher S. R. Neigh; Petya K. E. Campbell; Guoqing Sun; Tian Yao; Qingyuan Zhang; Karl Fred Huemmrich; Elizabeth M. Middleton; Stephen G. Ungar; Stuart W. Frye (Remote. Sens., 2017)

The 2013 FLEX - US Airborne Campaign at the Parker Tract Loblolly Pine Plantation in North Carolina, USA. - Elizabeth M. Middleton; Uwe Rascher; Lawrence A. Corp; Karl Fred Huemmrich; Bruce D. Cook; Asko Noormets; Anke Schickling; Francisco Pinto; Luis Alonso 002; Alexander Damm; Luis Guanter; Roberto Colombo; et al. (Remote. Sens., 2017)

ISS as a Platform for Optical Remote Sensing of Ecosystem Carbon Fluxes: A Case Study Using HICO. - Karl Fred Huemmrich; Petya K. E. Campbell; Bo-Cai Gao; Larry B. Flanagan; Michael Goulden (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2017)

Ground-Based Measurements and Validation Protocols for Flex. - Elizabeth M. Middleton; Karl Fred Huemmrich; Petya K. E. Campbell; Oinsyuan Zhany; David R. Landis; Cris Garrish; Lawrence Ong; Craig Daughiry (IGARSS, 2018)

Comparison of Global and Continental Land Cover Products for Selected Study Areas in South Central and Eastern European Region. - Ioannis Manakos; Monika Tomaszewska; Ioannis Gkinis; Olga V. Brovkina; Lachezar Filchev; Levent Genc; Ioannis Z. Gitas; Andrej Halabuk; Melis Inalpulat; Anisoara Irimescu; Georgi Jelev; Konstantinos Karantzalos; et al. (Remote. Sens., 2018)

Diurnal and Seasonal Variations in Chlorophyll Fluorescence Associated with Photosynthesis at Leaf and Canopy Scales. - Petya K. E. Campbell; Karl Fred Huemmrich; Elizabeth M. Middleton; Lauren A. Ward; Tommaso Julitta; Craig S. T. Daughtry; Andreas Burkart; Andrew L. Russ; William P. Kustas (Remote. Sens., 2019)

Systematic Orbital Geometry-Dependent Variations in Satellite Solar-Induced Fluorescence (SIF) Retrievals. - Joanna Joiner; Yasuko Yoshida; Philipp Köhler; Petya K. E. Campbell; Christian Frankenberg; Christiaan van der Tol; Peiqi Yang; Nicholas Parazoo; Luis Guanter; Ying Sun (Remote. Sens., 2020)

Automated Uas Measurements of Reflectance and Solar Induced Florescence (SIF) for Assessment Of the Dinamics in Photosynthetic Function, Application for Maze (Zea Mays L.) in Greenbelt, Maryland, Us. - Petya K. E. Campbell; Philip A. Townsend; Dan Mandl; James MacKinnon (IGARSS, 2021)

Determining Terrestrial Ecosystem Gross Primary Productivity From PACE OCI. - Karl Fred Huemmrich; Skye Caplan; John A. Gamon; Petya K. E. Campbell (IEEE Geosci. Remote. Sens. Lett., 2025)