Jeffrey P. Walker

ORCID

Publication Activity (10 Years)

Years Active: 2001-2024
Publications (10 Years): 89

Top Venues

IGARSS

IEEE Trans. Geosci. Remote. Sens.

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

IEEE Geosci. Remote. Sens. Lett.

Publications

Yanmei Zhong, Zushuai Wei, Linguang Miao, Yanwen Wang, Jeffrey P. Walker, Andreas Colliander
Downscaling Passive Microwave Soil Moisture Estimates Using Stand-Alone Optical Remote Sensing Data. IEEE Trans. Geosci. Remote. Sens. 62 (2024)
Nan Ye, Jeffrey P. Walker, Ying Gao, Ivan Popstefanija, James Hills
Comparison Between Thermal-Optical and L-Band Passive Microwave Soil Moisture Remote Sensing at Farm Scales: Towards UAV-Based Near-Surface Soil Moisture Mapping. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 17 (2024)
Xiaoling Wu, Jeffrey P. Walker, Nan Ye
Evaluation of the Bayesian Downscaling Algorithm for Achieving Higher Resolution Soil Moisture Data. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 17 (2024)
Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Xiaoji Shen, Nan Ye, Xiaoling Wu, In-Young Yeo, Nithyapriya Boopathi, Edward J. Kim, Yann H. Kerr, Thomas J. Jackson
A Comparison of Passive Microwave Emission Models for Estimating Brightness Temperature at L- and P-Bands Under Bare and Vegetated Soil Conditions. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 17 (2024)
Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Nan Ye, In-Young Yeo
Evaluating the Accuracy of Passive Microwave Emission Models for Estimating Brightness Temperature. IGARSS (2023)
Thi Mai Nguyen, Jeffrey P. Walker, Nan Ye, Jayantha Kodikara
Toward an Improved Surface Roughness Parameterization Model for Soil Moisture Retrieval in Road Construction. IEEE Trans. Geosci. Remote. Sens. 61 (2023)
Andreas Colliander, Yann Kerr, Jean-Pierre Wigneron, A. Al-Yaari, Nemesio Rodriguez-Fernandez, X. Li, Julian Chaubell, Philippe Richaume, Arnaud Mialon, Jun Asanuma, Aaron A. Berg, David D. Bosch, Todd Caldwell, Michael H. Cosh, Chandra D. Holifield Collins, José Martínez-Fernández, Heather McNairn, Mark S. Seyfried, Patrick J. Starks, Z. Bob Su, Marc Thibeault, Jeffrey P. Walker
Performance of SMOS Soil Moisture Products Over Core Validation Sites. IEEE Geosci. Remote. Sens. Lett. 20 (2023)
Xiaoji Shen, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Foad Brakhasi, Liujun Zhu, Edward Kim, Yann Kerr, Thomas J. Jackson
Evaluation of the Tau-Omega Model Over a Dense Corn Canopy at P- and L-Band. IEEE Geosci. Remote. Sens. Lett. 20 (2023)
Joan Francesc Muñoz-Martín, Daniel Pascual, Raul Onrubia, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Vegetation Canopy Height Retrieval Using L1 and L5 Airborne GNSS-R. IEEE Geosci. Remote. Sens. Lett. 19 (2022)
Jinyang Du, John S. Kimball, Rajat Bindlish, Jeffrey P. Walker, Jennifer D. Watts
Local Scale (3-m) Soil Moisture Mapping Using SMAP and Planet SuperDove. Remote. Sens. 14 (15) (2022)
Yuxi Zhang, Jeffrey P. Walker, Valentijn R. N. Pauwels, Yuval Sadeh
Assimilation of Wheat and Soil States into the APSIM-Wheat Crop Model: A Case Study. Remote. Sens. 14 (1) (2022)
Foad Brakhasi, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Xiaoji Shen, In-Young Yeo, Nithyapriya Boopathi
Root Zone Soil Moisture Profile Retrieval Using Combined L-Band and P-Band Radiometry. IGARSS (2022)
Thi Mai Nguyen, Jeffrey P. Walker, Nan Ye, Jayantha Kodikara
Environmental Effects on Brightness Temperature Observation From an L-Band Radiometer. IEEE Geosci. Remote. Sens. Lett. 19 (2022)
Amir Azemati, Amer Melebari, James D. Campbell, Jeffrey P. Walker, Mahta Moghaddam
GNSS-R Soil Moisture Retrieval for Flat Vegetated Surfaces Using a Physics-Based Bistatic Scattering Model and Hybrid Global/Local Optimization. Remote. Sens. 14 (13) (2022)
Julian Chaubell, Simon Yueh, Roy Scott Dunbar, Andreas Colliander, Dara Entekhabi, Steven Chan, Fan Chen, Xiaolan Xu, Rajat Bindlish, Peggy O'Neill, Jun Asanuma, Aaron A. Berg, David D. Bosch, Todd Caldwell, Michael H. Cosh, Chandra D. Holifield Collins, Karsten H. Jensen, José Martínez-Fernández, Mark S. Seyfried, Patrick J. Starks, Zhongbo Su, Marc Thibeault, Jeffrey P. Walker
Regularized Dual-Channel Algorithm for the Retrieval of Soil Moisture and Vegetation Optical Depth From SMAP Measurements. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15 (2022)
Xiaoling Wu, Jeffrey P. Walker, François Jonard, Nan Ye
Inter-Comparison of Proximal Near-Surface Soil Moisture Measurement Techniques. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15 (2022)
Andreas Colliander, Rolf H. Reichle, Wade T. Crow, Michael H. Cosh, Fan Chen, Steven Chan, Narendra Narayan Das, Rajat Bindlish, Julian Chaubell, Seung-Bum Kim, Qing Liu, Peggy E. O'Neill, Roy Scott Dunbar, Land B. Dang, John S. Kimball, Thomas J. Jackson, Hala Khalid AlJassar, Jun Asanuma, Bimal K. Bhattacharya, Aaron A. Berg, David D. Bosch, Laura L. Bourgeau-Chavez, Todd Caldwell, Jean-Christophe Calvet, Chandra D. Holifield Collins, Karsten H. Jensen, Stanley Livingston, Ernesto López-Baeza, José Martínez-Fernández, Heather McNairn, Mahta Moghaddam, Carsten Montzka, Claudia Notarnicola, Thierry Pellarin, Isabella Greimeister-Pfeil, Jouni Pulliainen, Judith Gpe. Ramos, Mark S. Seyfried, Patrick J. Starks, Zhongbo Su, Rogier van der Velde, Yijian Zeng, Marc Thibeault, Mariette Vreugdenhil, Jeffrey P. Walker, Mehrez Zribi, Dara Entekhabi, Simon H. Yueh
Validation of Soil Moisture Data Products From the NASA SMAP Mission. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15 (2022)
Jeffrey D. Ouellette, Tanish P. Himani, Li Li, Elizabeth M. Twarog, Andreas Colliander, David C. Goodrich, Chandra D. Holifield Collins, Michael H. Cosh, Jeffrey P. Walker
Application of a Change Detection Soil Moisture Retrieval Algorithm to Combined, Semiconcurrent Radiometer, and Radar Observations. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15 (2022)
Xiaoji Shen, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Nithyapriya Boopathi, In-Young Yeo, Linlin Zhang, Liujun Zhu
Soil Moisture Retrieval Depth of P- and L-Band Radiometry: Predictions and Observations. IEEE Trans. Geosci. Remote. Sens. 59 (8) (2021)
Nan Ye, Jeffrey P. Walker, In-Young Yeo, Thomas J. Jackson, Yann Kerr, Edward J. Kim, Andrew McGrath, Ivan Popstefanija, Mark A. Goodberlet, James Hills
Toward P-Band Passive Microwave Sensing of Soil Moisture. IEEE Geosci. Remote. Sens. Lett. 18 (3) (2021)
Nan Ye, Jeffrey P. Walker, Xiaoling Wu, Richard de Jeu, Ying Gao, Thomas J. Jackson, François Jonard, Edward J. Kim, Olivier Merlin, Valentijn R. N. Pauwels, Luigi J. Renzullo, Christoph Rüdiger, Sabah Sabaghy, Christian von Hebel, Simon H. Yueh, Liujun Zhu
The Soil Moisture Active Passive Experiments: Validation of the SMAP Products in Australia. IEEE Trans. Geosci. Remote. Sens. 59 (4) (2021)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Miriam Pablos, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Single-Pass Soil Moisture Retrieval Using GNSS-R at L1 and L5 Bands: Results from Airborne Experiment. Remote. Sens. 13 (4) (2021)
Rahul Raj, Jeffrey P. Walker, Vishal Vinod, Rohit Pingale, Balaji Naik, Jagarlapudi Adinarayana
Leaf water content estimation using top-of-canopy airborne hyperspectral data. Int. J. Appl. Earth Obs. Geoinformation 102 (2021)
Yuval Sadeh, Xuan Zhu, David Dunkerley, Jeffrey P. Walker, Yuxi Zhang, Offer Rozenstein, V. S. Manivasagam, Karine Chenu
Fusion of Sentinel-2 and PlanetScope time-series data into daily 3 m surface reflectance and wheat LAI monitoring. Int. J. Appl. Earth Obs. Geoinformation 96 (2021)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Parameter Considerations for the Retrieval of Surface Soil Moisture from Spaceborne GNSS-R. IGARSS (2021)
Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Rohit Nandan, Balaji Naik, Jagarlapudi Adinarayana
Leaf area index estimation using top-of-canopy airborne RGB images. Int. J. Appl. Earth Obs. Geoinformation 96 (2021)
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
Microwave Radiometry at Frequencies From 500 to 1400 MHz: An Emerging Technology for Earth Observations. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 14 (2021)
Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Balaji Naik Banoth, Jagarlapudi Adinarayana
Leaf nitrogen content estimation using top-of-canopy airborne hyperspectral data. Int. J. Appl. Earth Obs. Geoinformation 104 (2021)
Oriol Cervelló i Nogues, Joan Francesc Muñoz-Martín, Hyuk Park, Adriano Camps, Raul Onrubia, Daniel Pascual, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Improved GNSS-R Altimetry Methods: Theory and Experimental Demonstration Using Airborne Dual Frequency Data from the Microwave Interferometric Reflectometer (MIR). Remote. Sens. 13 (20) (2021)
Nithyapriya Boopathi, Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Xiaoji Shen, Y. S. Rao, Thomas J. Jackson, Yann Kerr, Edward J. Kim, Andrew McGrath, In-Young Yeo
Preliminary Model for Soil Moisture Retrieval Using P-Band Radiometer Observations. IGARSS (2020)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Untangling the GNSS-R Coherent and Incoherent Components: Experimental Evidences Over the Ocean. IGARSS (2020)
Liujun Zhu, Jeffrey P. Walker, Christoph Rüdiger, Pengfeng Xiao
Identification of Agricultural Row Features Using Optical Data for Scattering and Reflectance Modeling Over Periodic Surfaces. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 13 (2020)
Mario Julian Chaubell, Simon H. Yueh, Roy Scott Dunbar, Andreas Colliander, Fan Chen, Steven Tsz K. Chan, Dara Entekhabi, Rajat Bindlish, Peggy E. O'Neill, Jun Asanuma, Aaron A. Berg, David D. Bosch, Todd Caldwell, Michael H. Cosh, Chandra D. Holifield Collins, José Martínez-Fernández, Mark S. Seyfried, Patrick J. Starks, Zhongbo Su, Marc Thibeault, Jeffrey P. Walker
Improved SMAP Dual-Channel Algorithm for the Retrieval of Soil Moisture. IEEE Trans. Geosci. Remote. Sens. 58 (6) (2020)
Yuval Sadeh, Xuan Zhu, David Dunkerley, Jeffrey P. Walker, Yuxi Zhang, Offer Rozenstein, V. S. Manivasagam, Karine Chenu
Sentinel-2 and Planetscope Data Fusion into Daily 3 M Images for Leaf Area Index Monitoring. IGARSS (2020)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Untangling the Incoherent and Coherent Scattering Components in GNSS-R and Novel Applications. Remote. Sens. 12 (7) (2020)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Experimental Evidence of Swell Signatures in Airborne L5/E5a GNSS-Reflectometry. Remote. Sens. 12 (11) (2020)
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
First Experimental Evidence of Wind and Swell Signatures in L5 GPS and E5A Galileo GNSS-R Waveforms. IGARSS (2020)
James E. Hilton, Stefania Grimaldi, Raymond C. Z. Cohen, N. Garg, Yuan Li, Steve P. Marvanek, Valentijn R. N. Pauwels, Jeffrey P. Walker
River reconstruction using a conformal mapping method. Environ. Model. Softw. 119 (2019)
Xiaoling Wu, Nan Ye, Jeffrey P. Walker, James Hills, François Jonard, Valentijn R. N. Pauwels
Multi-Platform Radiometer Systems for Surface Soil Moisture Retrieval. IGARSS (2019)
Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
Satellite Cross-Talk Impact Analysis in Airborne Interferometric Global Navigation Satellite System-Reflectometry with the Microwave Interferometric Reflectometer. Remote. Sens. 11 (9) (2019)
Sangita Kumari, R. Ramsankaran, Jeffrey P. Walker
Impact of Window Size in Remote Sensing Based Glacier Feature Tracking - a Study on Chhota Shigri Glacier, Western Himalayas, India. IGARSS (2019)
Andreas Colliander, Heather McNairn, Marc Thibeault, José Martínez-Fernández, Karsten H. Jensen, Jun Asanuma, Mark S. Seyfried, David D. Bosch, Patrick J. Starks, Chandra D. Holifield Collins, John H. Prueger, Thomas J. Jackson, Zhongbo Su, Simon H. Yueh, Steven Tsz K. Chan, Peggy O'Neill, Rajat Bindlish, Michael H. Cosh, Todd Caldwell, Jeffrey P. Walker, Aaron A. Berg
Seasonal Dependence of SMAP Radiometer-Based Soil Moisture Performance as Observed Over Core Validation Sites. IGARSS (2019)
Nan Ye, Jeffrey P. Walker, Christoph Rüdiger, Dongryeol Ryu, Robert J. Gurney
Impact of Urban Cover Fraction on SMOS and SMAP Surface Soil Moisture Retrieval Accuracy. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 12 (9) (2019)
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
Sentinel-1 & Sentinel-2 for SOIL Moisture Retrieval at Field Scale. IGARSS (2018)
Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Nithyapriya Boopathi, Thomas J. Jackson, Yann Kerr, Edward J. Kim, Andrew McGrath, In-Young Yeo, Mahta Moghaddam
Towards Multi-Frequency Soil Moisture Retrieval Using P- and L-Band Passive Microwave Sensing Technology. IGARSS (2018)
Raul Onrubia, Daniel Pascual, Jorge Querol, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker
Preliminary End- to-End Results of the MIR Instrument: the Microwave Interferometric Reflectometer. IGARSS (2018)
Liujun Zhu, Jeffrey P. Walker, Nan Ye, Christoph Rüdiger, Jörg M. Hacker, Rocco Panciera, Mihai A. Tanase, Xiaoling Wu, Douglas A. Gray, Nick J. S. Stacy, Alvin S. Goh, Heath Yardley, Jim Mead
The Polarimetric L-Band Imaging Synthetic Aperture Radar (PLIS): Description, Calibration, and Cross-Validation. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 11 (11) (2018)
Ying Gao, Jeffrey P. Walker, Nan Ye, Rocco Panciera, Alessandra Monerris, Dongryeol Ryu, Christoph Rüdiger, Thomas J. Jackson
Evaluation of the Tau-Omega Model for Passive Microwave Soil Moisture Retrieval Using SMAPEx Datasets. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 11 (3) (2018)
Narendra N. Das, Dara Entekhabi, Seung-Bum Kim, Thomas Jagdhuber, Roy Scott Dunbar, Simon Yueh, Peggy E. O'Neill, Andreas Colliander, Jeffrey P. Walker, Thomas J. Jackson
High Resolution Soil Moisture Product Based on Smap Active-Passive Approach Using Copernicus Sentinel 1 Data. IGARSS (2018)
Ying Gao, Andreas Colliander, Mariko S. Burgin, Jeffrey P. Walker, Chun-Sik Chae, Emmanuel P. Dinnat, Michael H. Cosh, Todd Caldwell, Aaron Berg, José Martínez-Fernández
L-, C- and X-Band Passive Microwave Soil Moisture Retrieval Algorithm Parameterization Using in Situ Validation Sites. IGARSS (2018)
Rajat Bindlish, Michael H. Cosh, Thomas J. Jackson, Toshio Koike, Hideyuki Fujii, Steven Tsz K. Chan, Jun Asanuma, Aaron Berg, David D. Bosch, Todd Caldwell, Chandra D. Holifield Collins, Heather McNairn, José Martínez-Fernández, John H. Prueger, Tracy L. Rowlandson, Mark S. Seyfried, Patrick J. Starks, Marc Thibeault, Rogier van der Velde, Jeffrey P. Walker, Evan J. Coopersmith
GCOM-W AMSR2 Soil Moisture Product Validation Using Core Validation Sites. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 11 (1) (2018)
Lian He, Yang Hong, Xiaoling Wu, Nan Ye, Jeffrey P. Walker, Xiaona Chen
Investigation of SMAP Active-Passive Downscaling Algorithms Using Combined Sentinel-1 SAR and SMAP Radiometer Data. IEEE Trans. Geosci. Remote. Sens. 56 (8) (2018)
Liujun Zhu, Jeffrey P. Walker, Leung Tsang, Huanting Huang, Nan Ye, Christoph Rüdiger
Soil Moisture Retrieval over Agricultural Fields from Time Series Multi-Angular L-Band Radar Data. IGARSS (2018)
Sandy Peischl, Jeffrey P. Walker, Dongryeol Ryu, Yann H. Kerr
Analysis of Data Acquisition Time on Soil Moisture Retrieval From Multiangle L-Band Observations. IEEE Trans. Geosci. Remote. Sens. 56 (2) (2018)
Dominik Rains, Gabrielle J. M. De Lannoy, Hans Lievens, Jeffrey P. Walker, Niko E. C. Verhoest
SMOS and SMAP Brightness Temperature Assimilation Over the Murrumbidgee Basin. IEEE Geosci. Remote. Sens. Lett. 15 (11) (2018)
Nithyapriya Boopathi, Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Y. S. Rao, Thomas J. Jackson, Yann Kerr, Edward J. Kim, Andrew McGrath, In-Young Yeo
Towards Soil Moisture Retrieval Using Tower-Based P-Band Radiometer Observations. IGARSS (2018)
Olivier Merlin, Luis Enrique Olivera-Guerra, Bouchra Ait Hssaine, Abdelhakim Amazirh, Yoann Malbéteau, Vivien Stefan, Beatriz Molero, Zoubair Rafi, Maria José Escorihuela, Jamal Ezzahar, Saïd Khabba, Jeffrey P. Walker, Yann Kerr, Vincent Simonneaux, Salah Er-Raki
Evaporation-based disaggregation of surface soil moisture data: The dispatch method, the CATDS product and on-going research. IGARSS (2017)
Yohei Sawada, Toshio Koike, Kentaro Aida, Kinya Toride, Jeffrey P. Walker
Fusing Microwave and Optical Satellite Observations to Simultaneously Retrieve Surface Soil Moisture, Vegetation Water Content, and Surface Soil Roughness. IEEE Trans. Geosci. Remote. Sens. 55 (11) (2017)
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
Sentinel-1 high resolution soil moisture. IGARSS (2017)
Steven Tsz K. Chan, Rajat Bindlish, Peggy O'Neill, Thomas J. Jackson, Julian Chaubell, Jeffrey Piepmeier, Roy Scott Dunbar, Andreas Colliander, Fan Chen, Dara Entekhabi, Simon Yueh, Michael H. Cosh, Todd Caldwell, Jeffrey P. Walker, Xiaoling Wu, Aaron A. Berg, Tracy L. Rowlandson, Anna Pacheco, Heather McNairn, Marc Thibeault, José Martínez-Fernández, Angel Gonzalez-Zamora, Ernesto López-Baeza, Frederik Uldall, Mark S. Seyfried, David D. Bosch, Patrick J. Starks, Chandra D. Holifield Collins, John H. Prueger, Zhongbo Su, Rogier van der Velde, Jun Asanuma, Michael A. Palecki, Eric E. Small, Marek Zreda, Jean-Christophe Calvet, Wade T. Crow, Yann Kerr
Development and validation of the SMAP enhanced passive soil moisture product. IGARSS (2017)
Lian He, Qiming Qin, Rocco Panciera, Mihai A. Tanase, Jeffrey P. Walker, Yang Hong
An Extension of the Alpha Approximation Method for Soil Moisture Estimation Using Time-Series SAR Data Over Bare Soil Surfaces. IEEE Geosci. Remote. Sens. Lett. 14 (8) (2017)
Sabah Sabaghy, Jeffrey P. Walker, Luigi J. Renzullo, Ruzbeh Akbar, Steven Tsz K. Chan, Julian Chaubell, Narendra N. Das, Roy Scott Dunbar, Dara Entekhabi, Anouk Gevaert, Thomas J. Jackson, Olivier Merlin, Mahta Moghaddam, Jinzheng Peng, Jeffrey Piepmeier, Maria Piles, Gerard Portal, Christoph Rüdiger, Vivien Stefan, Xiaoling Wu, Nan Ye, Simon Yueh
Comparison of downscaling techniques for high resolution soil moisture mapping. IGARSS (2017)
Peggy O'Neill, Steven Tsz K. Chan, Rajat Bindlish, Thomas J. Jackson, Andreas Colliander, Roy Scott Dunbar, Fan Chen, Jeffrey Piepmeier, Simon Yueh, Dara Entekhabi, Michael H. Cosh, Todd Caldwell, Jeffrey P. Walker, Xiaoling Wu, Aaron A. Berg, Tracy L. Rowlandson, Anna Pacheco, Heather McNairn, Marc Thibeault, José Martínez-Fernández, A. Gonzalez-Zamora, Ernesto López-Baeza, Frederik Uldall, Mark S. Seyfried, David D. Bosch, Patrick J. Starks, Chandra D. Holifield Collins, John H. Prueger, Zhongbo Su, Rogier van der Velde, Jun Asanuma, Michael A. Palecki, Eric E. Small, Marek Zreda, Jean-Christophe Calvet, Wade T. Crow, Yann Kerr
Assessment of version 4 of the SMAP passive soil moisture standard product. IGARSS (2017)
Xiwu Zhan, Li Fang, Jicheng Liu, Christopher Hain, Jifu Yin, Mitchell Schull, Michael H. Cosh, Jun Wen, Tarendra Lakhankar, Kun Yang, Jeffrey P. Walker
Fusing microwave and optical satellite observations for high resolution soil moisture data products. IGARSS (2017)
Antara Dasgupta, Stefania Grimaldi, R. Ramsankaran, Jeffrey P. Walker
Optimized glcm-based texture features for improved SAR-based flood mapping. IGARSS (2017)
Rajat Bindlish, Thomas J. Jackson, Michael H. Cosh, Toshio Koike, X. Fuiji, Richard de Jeu, Steven Tsz K. Chan, Jun Asanuma, Aaron A. Berg, David D. Bosch, Todd Caldwell, C. Holyfield Collins, Heather McNairn, José Martínez-Fernández, John H. Prueger, Mark S. Seyfried, Patrick J. Starks, Zhongbo Su, Marc Thibeault, Jeffrey P. Walker
AMSR2 soil moisture product validation. IGARSS (2017)
Ying Gao, Andreas Colliander, Mariko S. Burgin, Jeffrey P. Walker, Chun-Sik Chae, Emmanuel P. Dinnat, Michael H. Cosh
Multi-frequency radiometer-based soil moisture retrieval algorithm parametrization using in situ validation sites. IGARSS (2017)
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Ying Gao
Medium-Resolution Soil Moisture Retrieval Using the Bayesian Merging Method. IEEE Trans. Geosci. Remote. Sens. 55 (11) (2017)
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
Surface Soil Moisture Retrieval Using the L-Band Synthetic Aperture Radar Onboard the Soil Moisture Active-Passive Satellite and Evaluation at Core Validation Sites. IEEE Trans. Geosci. Remote. Sens. 55 (4) (2017)
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
A Time-Series Approach to Estimating Soil Moisture From Vegetated Surfaces Using L-Band Radar Backscatter. IEEE Trans. Geosci. Remote. Sens. 55 (6) (2017)
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Ying Gao
Intercomparison of Alternate Soil Moisture Downscaling Algorithms Using Active-Passive Microwave Observations. IEEE Geosci. Remote. Sens. Lett. 14 (2) (2017)
Peggy E. O'Neill, Steven Tsz K. Chan, Andreas Colliander, Roy Scott Dunbar, Eni G. Njoku, Rajat Bindlish, Fan Chen, Thomas J. Jackson, Mariko Burgin, Jeffrey Piepmeier, Simon Yueh, Dara Entekhabi, Michael H. Cosh, Todd Caldwell, Jeffrey P. Walker, Xiaoling Wu, Aaron A. Berg, Tracy L. Rowlandson, Anna Pacheco, Heather McNairn, Marc Thibeault, José Martínez-Fernández, Angel Gonzalez-Zamora, Mark S. Seyfried, David D. Bosch, Patrick J. Starks, David C. Goodrich, John H. Prueger, Michael A. Palecki, Eric E. Small, Marek Zreda, Jean-Christophe Calvet, Wade T. Crow, Yann Kerr
Evaluation of the validated Soil Moisture product from the SMAP radiometer. IGARSS (2016)
Rajat Bindlish, Thomas J. Jackson, Michael H. Cosh, Sushil Milak, Eni G. Njoku, Steven Tsz K. Chan, Mariko Burgin, Todd Caldwell, Aaron A. Berg, Heather McNairn, Jeffrey P. Walker, Y. Zeng, Zhongbo Su, Marc Thibeault, J. Martinez
Development and validation of the GCOM-W AMSR2 soil moisture product. IGARSS (2016)
Lian He, Rocco Panciera, Mihai A. Tanase, Jeffrey P. Walker, Qiming Qin
Soil Moisture Retrieval in Agricultural Fields Using Adaptive Model-Based Polarimetric Decomposition of SAR Data. IEEE Trans. Geosci. Remote. Sens. 54 (8) (2016)
Karolina D. Fieber, Ian J. Davenport, James M. Ferryman, Robert J. Gurney, Victor M. Becerra, Jeffrey P. Walker, Jörg M. Hacker
CHP Toolkit: Case Study of LAIe Sensitivity to Discontinuity of Canopy Cover in Fruit Plantations. IEEE Trans. Geosci. Remote. Sens. 54 (9) (2016)
Nan Ye, Jeffrey P. Walker, Xiaoling Wu, Thomas J. Jackson, Luigi J. Renzullo, Olivier Merlin, Christoph Rüdiger, Dara Entekhabi, Richard de Jeu, Edward J. Kim
Towards validation of SMAP: SMAPEX-4 & -5. IGARSS (2016)
Yanghui Kang, Mutlu Özdogan, Samuel C. Zipper, Miguel O. Roman, Jeffrey P. Walker, Suk Young Hong, Michael T. Marshall, Vincenzo Magliulo, José F. Moreno, Luis Alonso, Akira Miyata, Bruce Kimball, Steven P. Loheide II
How Universal Is the Relationship between Remotely Sensed Vegetation Indices and Crop Leaf Area Index? A Global Assessment. Remote. Sens. 8 (7) (2016)
Thomas J. Jackson, Jean-Pierre Wigneron, Yann Kerr, Michael H. Cosh, Andreas Colliander, Jeffrey P. Walker, Rajat Bindlish
Satellite-based soil moisture validation and field experiments; skylab to smap. IGARSS (2016)
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Raul Onrubia, Jorge Querol, Hyuk Park, Daniel Pascual
On the Correlation Between GNSS-R Reflectivity and L-Band Microwave Radiometry. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 9 (12) (2016)
Yuan Li, Stefania Grimaldi, Jeffrey P. Walker, Valentijn R. N. Pauwels
Application of Remote Sensing Data to Constrain Operational Rainfall-Driven Flood Forecasting: A Review. Remote. Sens. 8 (6) (2016)
Yuancheng Huang, Jeffrey P. Walker, Ying Gao, Xiaoling Wu, Alessandra Monerris
Estimation of Vegetation Water Content From the Radar Vegetation Index at L-Band. IEEE Trans. Geosci. Remote. Sens. 54 (2) (2016)
Steven Tsz K. Chan, Rajat Bindlish, Peggy E. O'Neill, Eni G. Njoku, Thomas J. Jackson, Andreas Colliander, Fan Chen, Mariko Burgin, Roy Scott Dunbar, Jeffrey Piepmeier, Simon Yueh, Dara Entekhabi, Michael H. Cosh, Todd Caldwell, Jeffrey P. Walker, Xiaoling Wu, Aaron A. Berg, Tracy L. Rowlandson, Anna Pacheco, Heather McNairn, Marc Thibeault, José Martínez-Fernández, Angel Gonzalez-Zamora, Mark S. Seyfried, David D. Bosch, Patrick J. Starks, David C. Goodrich, John H. Prueger, Michael A. Palecki, Eric E. Small, Marek Zreda, Jean-Christophe Calvet, Wade T. Crow, Yann Kerr
Assessment of the SMAP Passive Soil Moisture Product. IEEE Trans. Geosci. Remote. Sens. 54 (8) (2016)
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
Surface soil moisture retrieval using L-band SMAP SAR data and its validation. IGARSS (2016)
Pardhasaradhi Teluguntla, Dongryeol Ryu, Biju George, Jeffrey P. Walker, Hector M. Malano
Mapping Flooded Rice Paddies Using Time Series of MODIS Imagery in the Krishna River Basin, India. Remote. Sens. 7 (7) (2015)
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera
Effect of Land-Cover Type on the SMAP Active/Passive Soil Moisture Downscaling Algorithm Performance. IEEE Geosci. Remote. Sens. Lett. 12 (4) (2015)
Niko E. C. Verhoest, Martinus Johannes van den Berg, Brecht Martens, Hans Lievens, Eric F. Wood, Ming Pan, Yann H. Kerr, Ahmad Al Bitar, Sat Kumar Tomer, Matthias Drusch, Hilde Vernieuwe, Bernard De Baets, Jeffrey P. Walker, Gift Dumedah, Valentijn R. N. Pauwels
Copula-Based Downscaling of Coarse-Scale Soil Moisture Observations With Implicit Bias Correction. IEEE Trans. Geosci. Remote. Sens. 53 (6) (2015)
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Douglas A. Gray
Simulation of the SMAP Data Stream From SMAPEx Field Campaigns in Australia. IEEE Trans. Geosci. Remote. Sens. 53 (4) (2015)
Nan Ye, Jeffrey P. Walker, Christoph Rüdiger
A Cumulative Distribution Function Method for Normalizing Variable-Angle Microwave Observations. IEEE Trans. Geosci. Remote. Sens. 53 (7) (2015)
Ying Gao, Jeffrey P. Walker, Mahdi Allahmoradi, Alessandra Monerris, Dongryeol Ryu, Thomas J. Jackson
Optical Sensing of Vegetation Water Content: A Synthesis Study. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 8 (4) (2015)
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Giuseppe Forte, Daniel Pascual, Hyuk Park, Raul Onrubia
The light airborne reflectometer for GNSS-R observations (LARGO) instrument: Initial results from airborne and Rover field campaigns. IGARSS (2014)
Rocco Panciera, Mihai A. Tanase, Kim Lowell, Jeffrey P. Walker
Evaluation of IEM, Dubois, and Oh Radar Backscatter Models Using Airborne L-Band SAR. IEEE Trans. Geosci. Remote. Sens. 52 (8) (2014)
Gift Dumedah, Jeffrey P. Walker, Christoph Rüdiger
Can SMOS Data be Used Directly on the 15-km Discrete Global Grid? IEEE Trans. Geosci. Remote. Sens. 52 (5) (2014)
Rocco Panciera, Jeffrey P. Walker, Thomas J. Jackson, Douglas A. Gray, Mihai A. Tanase, Dongryeol Ryu, Alessandra Monerris, Heath Yardley, Christoph Rüdiger, Xiaoling Wu, Ying Gao, Jörg M. Hacker
The Soil Moisture Active Passive Experiments (SMAPEx): Toward Soil Moisture Retrieval From the SMAP Mission. IEEE Trans. Geosci. Remote. Sens. 52 (1) (2014)
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Giuseppe Forte, Daniel Pascual, Hyuk Park, Raul Onrubia
The dual polarization GNSS-R interference pattern technique. IGARSS (2014)
Christoph Rüdiger, Jeffrey P. Walker, Yann H. Kerr, Edward J. Kim, Jörg M. Hacker, Robert J. Gurney, Damian J. Barrett, John Le Marshall
Toward Vicarious Calibration of Microwave Remote-Sensing Satellites in Arid Environments. IEEE Trans. Geosci. Remote. Sens. 52 (3) (2014)
Alberto Alonso Arroyo, Adriano Camps, Albert Aguasca, Giuseppe Forte, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Hyuk Park, Daniel Pascual, Raul Onrubia
Improving the Accuracy of Soil Moisture Retrievals Using the Phase Difference of the Dual-Polarization GNSS-R Interference Patterns. IEEE Geosci. Remote. Sens. Lett. 11 (12) (2014)
Christoph Rüdiger, Marcela Doubková, Joshua R. Larsen, Wolfgang Wagner, Jeffrey P. Walker
Similarities Between Spaceborne Active and Airborne Passive Microwave Observations at 1 km Resolution. IEEE Geosci. Remote. Sens. Lett. 11 (12) (2014)
Mihai A. Tanase, Rocco Panciera, Kim Lowell, Cristina Aponte, Jörg M. Hacker, Jeffrey P. Walker
Forest Biomass Estimation at High Spatial Resolution: Radar Versus Lidar Sensors. IEEE Geosci. Remote. Sens. Lett. 11 (3) (2014)
Mihai A. Tanase, Rocco Panciera, Kim Lowell, Siyuan Tian, Alberto García-Martín, Jeffrey P. Walker
Sensitivity of L-Band Radar Backscatter to Forest Biomass in Semiarid Environments: A Comparative Analysis of Parametric and Nonparametric Models. IEEE Trans. Geosci. Remote. Sens. 52 (8) (2014)
Clive S. Fraser, Jeffrey P. Walker, Mark L. Williams
Foreword to the Special Issue on the 2013 IEEE International Geoscience and Remote Sensing Symposium. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 7 (9) (2014)

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Jeffrey P. Walker