Jeffrey P. Walker

137 papers C 43Journal 91Unranked 3
YearRankTypeTitle / Venue / Authors
2025 J jnl
Are the Current Expectations for SAR Remote Sensing of Soil Moisture Using Machine Learning Overoptimistic?
IEEE Trans. Geosci. Remote. Sens.
Liujun Zhu, Junjie Dai, Junliang Jin, Shanshui Yuan, Ziwei Xiong, Jeffrey P. Walker
2025 J jnl
Spatial Soil Moisture Prediction From In Situ Data Upscaled to Landsat Footprint: Assessing Area of Applicability of Machine Learning Models.
IEEE Trans. Geosci. Remote. Sens.
Yi Yu, Brendan P. Malone, Luigi J. Renzullo, Chad Burton, Siyuan Tian, Ross D. Searle, Thomas F. A. Bishop, Jeffrey P. Walker
2024 J jnl
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.
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
2024 C conf
A Soil Moisture Spatial Downscaling Method for Smap Using the Optical Trapezoid Model.
IGARSS
Yanmei Zhong, Zushuai Wei, Andreas Colliander, Jeffrey P. Walker
2024 J jnl
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.
Nan Ye, Jeffrey P. Walker, Ying Gao, Ivan Popstefanija, James Hills
2024 J jnl
Downscaling Passive Microwave Soil Moisture Estimates Using Stand-Alone Optical Remote Sensing Data.
IEEE Trans. Geosci. Remote. Sens.
Yanmei Zhong, Zushuai Wei, Linguang Miao, Yanwen Wang, Jeffrey P. Walker, Andreas Colliander
2024 J jnl
Evaluation of the Bayesian Downscaling Algorithm for Achieving Higher Resolution Soil Moisture Data.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Xiaoling Wu, Jeffrey P. Walker, Nan Ye
2024 C conf
Multi-Layer Soil Moisture Estimation Using Combined L-and P-Band Radiometry: an Application of Machine Learning Algorithms.
IGARSS
Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Xiaoji Shen, Nan Ye, Xiaoling Wu, In-Young Yeo, Richa Prajapati, Edward Kim, Yann Kerr, Thomas J. Jackson
2023 C conf
Evaluating the Accuracy of Passive Microwave Emission Models for Estimating Brightness Temperature.
IGARSS
Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Nan Ye, In-Young Yeo
2023 J jnl
Evaluation of the Tau-Omega Model Over a Dense Corn Canopy at P- and L-Band.
IEEE Geosci. Remote. Sens. Lett.
Xiaoji Shen, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Foad Brakhasi, Liujun Zhu, Edward Kim, Yann Kerr, Thomas J. Jackson
2023 J jnl
Performance of SMOS Soil Moisture Products Over Core Validation Sites.
IEEE Geosci. Remote. Sens. Lett.
Andreas Colliander, Yann Kerr, Jean-Pierre Wigneron, A. Al-Yaari, Nemesio Rodriguez-Fernandez, Xiaojun 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
2023 J jnl
Toward an Improved Surface Roughness Parameterization Model for Soil Moisture Retrieval in Road Construction.
IEEE Trans. Geosci. Remote. Sens.
Thi Mai Nguyen, Jeffrey P. Walker, Nan Ye, Jayantha Kodikara
2022 J jnl
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.
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
2022 J jnl
Assimilation of Wheat and Soil States into the APSIM-Wheat Crop Model: A Case Study.
Remote. Sens.
Yuxi Zhang, Jeffrey P. Walker, Valentijn R. N. Pauwels, Yuval Sadeh
2022 J jnl
Environmental Effects on Brightness Temperature Observation From an L-Band Radiometer.
IEEE Geosci. Remote. Sens. Lett.
Thi Mai Nguyen, Jeffrey P. Walker, Nan Ye, Jayantha Kodikara
2022 J jnl
GNSS-R Soil Moisture Retrieval for Flat Vegetated Surfaces Using a Physics-Based Bistatic Scattering Model and Hybrid Global/Local Optimization.
Remote. Sens.
Amir Azemati, Amer Melebari, James D. Campbell, Jeffrey P. Walker, Mahta Moghaddam
2022 J jnl
Inter-Comparison of Proximal Near-Surface Soil Moisture Measurement Techniques.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Xiaoling Wu, Jeffrey P. Walker, François Jonard, Nan Ye
2022 J jnl
Local Scale (3-m) Soil Moisture Mapping Using SMAP and Planet SuperDove.
Remote. Sens.
Jinyang Du, John S. Kimball, Rajat Bindlish, Jeffrey P. Walker, Jennifer D. Watts
2022 J jnl
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.
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
2022 C conf
Root Zone Soil Moisture Profile Retrieval Using Combined L-Band and P-Band Radiometry.
IGARSS
Foad Brakhasi, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Xiaoji Shen, In-Young Yeo, Nithyapriya Boopathi
2022 J jnl
Validation of Soil Moisture Data Products From the NASA SMAP Mission.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
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
2022 J jnl
Vegetation Canopy Height Retrieval Using L1 and L5 Airborne GNSS-R.
IEEE Geosci. Remote. Sens. Lett.
Joan Francesc Muñoz-Martín, Daniel Pascual, Raul Onrubia, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2021 J jnl
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
Yuval Sadeh, Xuan Zhu, David Dunkerley, Jeffrey P. Walker, Yuxi Zhang, Offer Rozenstein, V. S. Manivasagam, Karine Chenu
2021 J jnl
Improved GNSS-R Altimetry Methods: Theory and Experimental Demonstration Using Airborne Dual Frequency Data from the Microwave Interferometric Reflectometer (MIR).
Remote. Sens.
Oriol Cervelló i Nogues, Joan Francesc Muñoz-Martín, Hyuk Park, Adriano Camps, Raul Onrubia, Daniel Pascual, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2021 J jnl
Leaf area index estimation using top-of-canopy airborne RGB images.
Int. J. Appl. Earth Obs. Geoinformation
Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Rohit Nandan, Balaji Naik, Jagarlapudi Adinarayana
2021 J jnl
Leaf nitrogen content estimation using top-of-canopy airborne hyperspectral data.
Int. J. Appl. Earth Obs. Geoinformation
Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Balaji Naik Banoth, Jagarlapudi Adinarayana
2021 J jnl
Leaf water content estimation using top-of-canopy airborne hyperspectral data.
Int. J. Appl. Earth Obs. Geoinformation
Rahul Raj, Jeffrey P. Walker, Vishal Vinod, Rohit Pingale, Balaji Naik, Jagarlapudi Adinarayana
2021 J jnl
Microwave Radiometry at Frequencies From 500 to 1400 MHz: An Emerging Technology for Earth Observations.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
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
2021 C conf
Parameter Considerations for the Retrieval of Surface Soil Moisture from Spaceborne GNSS-R.
IGARSS
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2021 J jnl
Single-Pass Soil Moisture Retrieval Using GNSS-R at L1 and L5 Bands: Results from Airborne Experiment.
Remote. Sens.
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Miriam Pablos, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2021 J jnl
Soil Moisture Retrieval Depth of P- and L-Band Radiometry: Predictions and Observations.
IEEE Trans. Geosci. Remote. Sens.
Xiaoji Shen, Jeffrey P. Walker, Nan Ye, Xiaoling Wu, Nithyapriya Boopathi, In-Young Yeo, Linlin Zhang, Liujun Zhu
2021 J jnl
The Soil Moisture Active Passive Experiments: Validation of the SMAP Products in Australia.
IEEE Trans. Geosci. Remote. Sens.
Nan Ye, Jeffrey P. Walker, Xiaoling Wu, Richard de Jeu, Ying Gao, Thomas J. Jackson, François Jonard, Edward Kim, Olivier Merlin, Valentijn R. N. Pauwels, Luigi J. Renzullo, Christoph Rüdiger, Sabah Sabaghy, Christian von Hebel, Simon H. Yueh, Liujun Zhu
2021 J jnl
Toward P-Band Passive Microwave Sensing of Soil Moisture.
IEEE Geosci. Remote. Sens. Lett.
Nan Ye, Jeffrey P. Walker, In-Young Yeo, Thomas J. Jackson, Yann Kerr, Edward Kim, Andrew McGrath, Ivan Popstefanija, Mark A. Goodberlet, James Hills
2020 J jnl
Experimental Evidence of Swell Signatures in Airborne L5/E5a GNSS-Reflectometry.
Remote. Sens.
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2020 C conf
First Experimental Evidence of Wind and Swell Signatures in L5 GPS and E5A Galileo GNSS-R Waveforms.
IGARSS
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2020 J jnl
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.
Liujun Zhu, Jeffrey P. Walker, Christoph Rüdiger, Pengfeng Xiao
2020 J jnl
Improved SMAP Dual-Channel Algorithm for the Retrieval of Soil Moisture.
IEEE Trans. Geosci. Remote. Sens.
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
2020 C conf
Preliminary Model for Soil Moisture Retrieval Using P-Band Radiometer Observations.
IGARSS
Nithyapriya Boopathi, Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Xiaoji Shen, Y. S. Rao, Thomas J. Jackson, Yann Kerr, Edward Kim, Andrew McGrath, In-Young Yeo
2020 C conf
Sentinel-2 and Planetscope Data Fusion into Daily 3 M Images for Leaf Area Index Monitoring.
IGARSS
Yuval Sadeh, Xuan Zhu, David Dunkerley, Jeffrey P. Walker, Yuxi Zhang, Offer Rozenstein, V. S. Manivasagam, Karine Chenu
2020 C conf
Untangling the GNSS-R Coherent and Incoherent Components: Experimental Evidences Over the Ocean.
IGARSS
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2020 J jnl
Untangling the Incoherent and Coherent Scattering Components in GNSS-R and Novel Applications.
Remote. Sens.
Joan Francesc Muñoz-Martín, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2019 J jnl
Impact of Urban Cover Fraction on SMOS and SMAP Surface Soil Moisture Retrieval Accuracy.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Nan Ye, Jeffrey P. Walker, Christoph Rüdiger, Dongryeol Ryu, Robert J. Gurney
2019 C conf
Impact of Window Size in Remote Sensing Based Glacier Feature Tracking - a Study on Chhota Shigri Glacier, Western Himalayas, India.
IGARSS
Sangita Kumari, R. Ramsankaran, Jeffrey P. Walker
2019 C conf
Multi-Platform Radiometer Systems for Surface Soil Moisture Retrieval.
IGARSS
Xiaoling Wu, Nan Ye, Jeffrey P. Walker, James Hills, François Jonard, Valentijn R. N. Pauwels
2019 J jnl
River reconstruction using a conformal mapping method.
Environ. Model. Softw.
James E. Hilton, Stefania Grimaldi, Raymond C. Z. Cohen, Nikhil Garg, Yuan Li, Steve P. Marvanek, Valentijn R. N. Pauwels, Jeffrey P. Walker
2019 J jnl
Satellite Cross-Talk Impact Analysis in Airborne Interferometric Global Navigation Satellite System-Reflectometry with the Microwave Interferometric Reflectometer.
Remote. Sens.
Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris
2019 C conf
Seasonal Dependence of SMAP Radiometer-Based Soil Moisture Performance as Observed Over Core Validation Sites.
IGARSS
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
2018 J jnl
Analysis of Data Acquisition Time on Soil Moisture Retrieval From Multiangle L-Band Observations.
IEEE Trans. Geosci. Remote. Sens.
Sandy Peischl, Jeffrey P. Walker, Dongryeol Ryu, Yann H. Kerr
2018 J jnl
Evaluation of the Tau-Omega Model for Passive Microwave Soil Moisture Retrieval Using SMAPEx Datasets.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Ying Gao, Jeffrey P. Walker, Nan Ye, Rocco Panciera, Alessandra Monerris, Dongryeol Ryu, Christoph Rüdiger, Thomas J. Jackson
2018 J jnl
GCOM-W AMSR2 Soil Moisture Product Validation Using Core Validation Sites.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
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
2018 C conf
High Resolution Soil Moisture Product Based on Smap Active-Passive Approach Using Copernicus Sentinel 1 Data.
IGARSS
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
2018 J jnl
Investigation of SMAP Active-Passive Downscaling Algorithms Using Combined Sentinel-1 SAR and SMAP Radiometer Data.
IEEE Trans. Geosci. Remote. Sens.
Lian He, Yang Hong, Xiaoling Wu, Nan Ye, Jeffrey P. Walker, Xiaona Chen
2018 C conf
L-, C- and X-Band Passive Microwave Soil Moisture Retrieval Algorithm Parameterization Using in Situ Validation Sites.
IGARSS
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
2018 C conf
Preliminary End- to-End Results of the MIR Instrument: the Microwave Interferometric Reflectometer.
IGARSS
Raul Onrubia, Daniel Pascual, Jorge Querol, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey P. Walker
2018 J jnl
SMOS and SMAP Brightness Temperature Assimilation Over the Murrumbidgee Basin.
IEEE Geosci. Remote. Sens. Lett.
Dominik Rains, Gabrielle J. M. De Lannoy, Hans Lievens, Jeffrey P. Walker, Niko E. C. Verhoest
2018 C conf
Sentinel-1 & Sentinel-2 for SOIL Moisture Retrieval at Field Scale.
IGARSS
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
2018 C conf
Soil Moisture Retrieval over Agricultural Fields from Time Series Multi-Angular L-Band Radar Data.
IGARSS
Liujun Zhu, Jeffrey P. Walker, Leung Tsang, Huanting Huang, Nan Ye, Christoph Rüdiger
2018 J jnl
The Polarimetric L-Band Imaging Synthetic Aperture Radar (PLIS): Description, Calibration, and Cross-Validation.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
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
2018 C conf
Towards Multi-Frequency Soil Moisture Retrieval Using P- and L-Band Passive Microwave Sensing Technology.
IGARSS
Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Nithyapriya Boopathi, Thomas J. Jackson, Yann Kerr, Edward Kim, Andrew McGrath, In-Young Yeo, Mahta Moghaddam
2018 C conf
Towards Soil Moisture Retrieval Using Tower-Based P-Band Radiometer Observations.
IGARSS
Nithyapriya Boopathi, Nan Ye, Xiaoling Wu, Jeffrey P. Walker, Y. S. Rao, Thomas J. Jackson, Yann Kerr, Edward Kim, Andrew McGrath, In-Young Yeo
2017 J jnl
A Time-Series Approach to Estimating Soil Moisture From Vegetated Surfaces Using L-Band Radar Backscatter.
IEEE Trans. Geosci. Remote. Sens.
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
2017 C conf
AMSR2 soil moisture product validation.
IGARSS
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
2017 J jnl
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.
Lian He, Qiming Qin, Rocco Panciera, Mihai A. Tanase, Jeffrey P. Walker, Yang Hong
2017 C conf
Assessment of version 4 of the SMAP passive soil moisture standard product.
IGARSS
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
2017 C conf
Comparison of downscaling techniques for high resolution soil moisture mapping.
IGARSS
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
2017 C conf
Development and validation of the SMAP enhanced passive soil moisture product.
IGARSS
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
2017 C conf
Evaporation-based disaggregation of surface soil moisture data: The dispatch method, the CATDS product and on-going research.
IGARSS
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
2017 J jnl
Fusing Microwave and Optical Satellite Observations to Simultaneously Retrieve Surface Soil Moisture, Vegetation Water Content, and Surface Soil Roughness.
IEEE Trans. Geosci. Remote. Sens.
Yohei Sawada, Toshio Koike, Kentaro Aida, Kinya Toride, Jeffrey P. Walker
2017 C conf
Fusing microwave and optical satellite observations for high resolution soil moisture data products.
IGARSS
Xiwu Zhan, Li Fang, Jicheng Liu, Christopher Hain, Jifu Yin, Mitchell Schull, Michael H. Cosh, Jun Wen, Tarendra Lakhankar, Kun Yang, Jeffrey P. Walker
2017 J jnl
Intercomparison of Alternate Soil Moisture Downscaling Algorithms Using Active-Passive Microwave Observations.
IEEE Geosci. Remote. Sens. Lett.
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Ying Gao
2017 J jnl
Medium-Resolution Soil Moisture Retrieval Using the Bayesian Merging Method.
IEEE Trans. Geosci. Remote. Sens.
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Ying Gao
2017 C conf
Multi-frequency radiometer-based soil moisture retrieval algorithm parametrization using in situ validation sites.
IGARSS
Ying Gao, Andreas Colliander, Mariko S. Burgin, Jeffrey P. Walker, Chun-Sik Chae, Emmanuel P. Dinnat, Michael H. Cosh
2017 C conf
Optimized glcm-based texture features for improved SAR-based flood mapping.
IGARSS
Antara Dasgupta, Stefania Grimaldi, R. Ramsankaran, Jeffrey P. Walker
2017 C conf
Sentinel-1 high resolution soil moisture.
IGARSS
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
2017 J jnl
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.
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
2016 J jnl
Application of Remote Sensing Data to Constrain Operational Rainfall-Driven Flood Forecasting: A Review.
Remote. Sens.
Yuan Li, Stefania Grimaldi, Jeffrey P. Walker, Valentijn R. N. Pauwels
2016 J jnl
Assessment of the SMAP Passive Soil Moisture Product.
IEEE Trans. Geosci. Remote. Sens.
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
2016 J jnl
CHP Toolkit: Case Study of LAIe Sensitivity to Discontinuity of Canopy Cover in Fruit Plantations.
IEEE Trans. Geosci. Remote. Sens.
Karolina D. Fieber, Ian J. Davenport, James M. Ferryman, Robert J. Gurney, Victor M. Becerra, Jeffrey P. Walker, Jörg M. Hacker
2016 C conf
Development and validation of the GCOM-W AMSR2 soil moisture product.
IGARSS
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, Yijian Zeng, Zhongbo Su, Marc Thibeault, Justino Martínez
2016 J jnl
Estimation of Vegetation Water Content From the Radar Vegetation Index at L-Band.
IEEE Trans. Geosci. Remote. Sens.
Yuancheng Huang, Jeffrey P. Walker, Ying Gao, Xiaoling Wu, Alessandra Monerris
2016 C conf
Evaluation of the validated Soil Moisture product from the SMAP radiometer.
IGARSS
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
2016 J jnl
How Universal Is the Relationship between Remotely Sensed Vegetation Indices and Crop Leaf Area Index? A Global Assessment.
Remote. Sens.
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
2016 J jnl
On the Correlation Between GNSS-R Reflectivity and L-Band Microwave Radiometry.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Raul Onrubia, Jorge Querol, Hyuk Park, Daniel Pascual
2016 C conf
Satellite-based soil moisture validation and field experiments; skylab to smap.
IGARSS
Thomas J. Jackson, Jean-Pierre Wigneron, Yann Kerr, Michael H. Cosh, Andreas Colliander, Jeffrey P. Walker, Rajat Bindlish
2016 J jnl
Soil Moisture Retrieval in Agricultural Fields Using Adaptive Model-Based Polarimetric Decomposition of SAR Data.
IEEE Trans. Geosci. Remote. Sens.
Lian He, Rocco Panciera, Mihai A. Tanase, Jeffrey P. Walker, Qiming Qin
2016 C conf
Surface soil moisture retrieval using L-band SMAP SAR data and its validation.
IGARSS
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
2016 C conf
Towards validation of SMAP: SMAPEX-4 & -5.
IGARSS
Nan Ye, Jeffrey P. Walker, Xiaoling Wu, Thomas J. Jackson, Luigi J. Renzullo, Olivier Merlin, Christoph Rüdiger, Dara Entekhabi, Richard de Jeu, Edward Kim
2015 J jnl
A Cumulative Distribution Function Method for Normalizing Variable-Angle Microwave Observations.
IEEE Trans. Geosci. Remote. Sens.
Nan Ye, Jeffrey P. Walker, Christoph Rüdiger
2015 J jnl
Copula-Based Downscaling of Coarse-Scale Soil Moisture Observations With Implicit Bias Correction.
IEEE Trans. Geosci. Remote. Sens.
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
2015 J jnl
Effect of Land-Cover Type on the SMAP Active/Passive Soil Moisture Downscaling Algorithm Performance.
IEEE Geosci. Remote. Sens. Lett.
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera
2015 J jnl
Mapping Flooded Rice Paddies Using Time Series of MODIS Imagery in the Krishna River Basin, India.
Remote. Sens.
Pardhasaradhi Teluguntla, Dongryeol Ryu, Biju George, Jeffrey P. Walker, Hector M. Malano
2015 J jnl
Optical Sensing of Vegetation Water Content: A Synthesis Study.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Ying Gao, Jeffrey P. Walker, Mahdi Allahmoradi, Alessandra Monerris, Dongryeol Ryu, Thomas J. Jackson
2015 J jnl
Simulation of the SMAP Data Stream From SMAPEx Field Campaigns in Australia.
IEEE Trans. Geosci. Remote. Sens.
Xiaoling Wu, Jeffrey P. Walker, Christoph Rüdiger, Rocco Panciera, Douglas A. Gray
2014 J jnl
Can SMOS Data be Used Directly on the 15-km Discrete Global Grid?
IEEE Trans. Geosci. Remote. Sens.
Gift Dumedah, Jeffrey P. Walker, Christoph Rüdiger
2014 J jnl
Dual-Polarization GNSS-R Interference Pattern Technique for Soil Moisture Mapping.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Alberto Alonso Arroyo, Adriano Camps, Albert Aguasca, Giuseppe F. Forte, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Hyuk Park, Daniel Pascual, Raul Onrubia
2014 J jnl
Effective LAI and CHP of a Single Tree From Small-Footprint Full-Waveform LiDAR.
IEEE Geosci. Remote. Sens. Lett.
Karolina D. Fieber, Ian J. Davenport, Mihai A. Tanase, James M. Ferryman, Robert J. Gurney, Jeffrey P. Walker, Jörg M. Hacker
2014 J jnl
Evaluation of IEM, Dubois, and Oh Radar Backscatter Models Using Airborne L-Band SAR.
IEEE Trans. Geosci. Remote. Sens.
Rocco Panciera, Mihai A. Tanase, Kim Lowell, Jeffrey P. Walker
2014 J jnl
Forest Biomass Estimation at High Spatial Resolution: Radar Versus Lidar Sensors.
IEEE Geosci. Remote. Sens. Lett.
Mihai A. Tanase, Rocco Panciera, Kim Lowell, Cristina Aponte, Jörg M. Hacker, Jeffrey P. Walker
2014 J jnl
Foreword to the Special Issue on the 2013 IEEE International Geoscience and Remote Sensing Symposium.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Clive S. Fraser, Jeffrey P. Walker, Mark L. Williams
2014 J jnl
Improving the Accuracy of Soil Moisture Retrievals Using the Phase Difference of the Dual-Polarization GNSS-R Interference Patterns.
IEEE Geosci. Remote. Sens. Lett.
Alberto Alonso Arroyo, Adriano Camps, Albert Aguasca, Giuseppe Forte, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Hyuk Park, Daniel Pascual, Raul Onrubia
2014 J jnl
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.
Mihai A. Tanase, Rocco Panciera, Kim Lowell, Siyuan Tian, Alberto García-Martín, Jeffrey P. Walker
2014 J jnl
Similarities Between Spaceborne Active and Airborne Passive Microwave Observations at 1 km Resolution.
IEEE Geosci. Remote. Sens. Lett.
Christoph Rüdiger, Marcela Doubková, Joshua R. Larsen, Wolfgang Wagner, Jeffrey P. Walker
2014 J jnl
The Soil Moisture Active Passive Experiments (SMAPEx): Toward Soil Moisture Retrieval From the SMAP Mission.
IEEE Trans. Geosci. Remote. Sens.
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
2014 C conf
The dual polarization GNSS-R interference pattern technique.
IGARSS
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Giuseppe Forte, Daniel Pascual, Hyuk Park, Raul Onrubia
2014 C conf
The light airborne reflectometer for GNSS-R observations (LARGO) instrument: Initial results from airborne and Rover field campaigns.
IGARSS
Alberto Alonso Arroyo, Adriano Camps, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Giuseppe Forte, Daniel Pascual, Hyuk Park, Raul Onrubia
2014 J jnl
Toward Vicarious Calibration of Microwave Remote-Sensing Satellites in Arid Environments.
IEEE Trans. Geosci. Remote. Sens.
Christoph Rüdiger, Jeffrey P. Walker, Yann H. Kerr, Edward J. Kim, Jörg M. Hacker, Robert J. Gurney, Damian J. Barrett, John Le Marshall
2013 C conf
Airborne forest monitoring during SMAPEx-3 campaign.
IGARSS
Cristina Vittucci, Leila Guerriero, Paolo Ferrazzoli, Rachid Rahmoune, Mihai A. Tanase, Rocco Panciera, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker
2013 C conf
Estimation of forest biomass from L-band polarimetric decomposition components.
IGARSS
Mihai A. Tanase, Rocco Panciera, Kim Lowell, Jörg M. Hacker, Jeffrey P. Walker
2013 C conf
Preliminary leaf area index estimates from airborne small footprint full-waveform LiDAR data.
IGARSS
Karolina D. Fieber, Ian J. Davenport, Mihai A. Tanase, James M. Ferryman, Robert J. Gurney, Jeffrey P. Walker, Jörg M. Hacker
2013 C conf
Sensitivity of TerraSAR-X-band data to surface parameters in bare agricultural areas.
IGARSS
Rocco Panciera, Fiona MacGill, Mihai A. Tanase, Kim Lowell, Jeffrey P. Walker
2013 C conf
Soil moisture maps from time series of PALSAR-1 scansar data over Australia.
IGARSS
Giuseppe Satalino, Francesco Mattia, Anna Balenzano, Rocco Panciera, Jeffrey P. Walker
2012 C conf
An airborne simulation of the SMAP data stream.
IGARSS
Jeffrey P. Walker, Peggy O'Neill, Xiaoling Wu, Ying Gao, Alessandra Monerris, Rocco Panciera, Thomas J. Jackson, Douglas A. Gray, Dongryeol Ryu
2012 C conf
COSMO-SkyMed multi-temporal data for land cover classification and soil moisture retrieval over an agricultural site in Southern Australia.
IGARSS
Giuseppe Satalino, Rocco Panciera, Anna Balenzano, Francesco Mattia, Jeffrey P. Walker
2012 J jnl
Disaggregation of SMOS Soil Moisture in Southeastern Australia.
IEEE Trans. Geosci. Remote. Sens.
Olivier Merlin, Christoph Rüdiger, Ahmad Al Bitar, Philippe Richaume, Jeffrey P. Walker, Yann H. Kerr
2012 J jnl
Multidimensional Disaggregation of Land Surface Temperature Using High-Resolution Red, Near-Infrared, Shortwave-Infrared, and Microwave-L Bands.
IEEE Trans. Geosci. Remote. Sens.
Olivier Merlin, Frédéric Jacob, Jean-Pierre Wigneron, Jeffrey P. Walker, Ghani Chehbouni
2012 J jnl
Soil Salinity Impacts on L-Band Remote Sensing of Soil Moisture.
IEEE Geosci. Remote. Sens. Lett.
Kaighin Alexander McColl, Dongryeol Ryu, Vjekoslav Matic, Jeffrey P. Walker, Justin Costelloe, Christoph Rüdiger
2012 J jnl
Wheat Canopy Structure and Surface Roughness Effects on Multiangle Observations at L-Band.
IEEE Trans. Geosci. Remote. Sens.
Sandy Peischl, Jeffrey P. Walker, Dongryeol Ryu, Yann H. Kerr, Rocco Panciera, Christoph Rüdiger
2011 J jnl
Downscaling SMOS-Derived Soil Moisture Using MODIS Visible/Infrared Data.
IEEE Trans. Geosci. Remote. Sens.
Maria Piles, Adriano Camps, Mercè Vall-Llossera, Ignasi Corbella, Rocco Panciera, Christoph Rüdiger, Yann H. Kerr, Jeffrey P. Walker
2011 J jnl
On the Airborne Spatial Coverage Requirement for Microwave Satellite Validation.
IEEE Geosci. Remote. Sens. Lett.
Christoph Rüdiger, Jeffrey P. Walker, Yann H. Kerr
2011 J jnl
Sensitivity of Passive Microwave Observations to Soil Moisture and Vegetation Water Content: L-Band to W-Band.
IEEE Trans. Geosci. Remote. Sens.
Jean-Christophe Calvet, Jean-Pierre Wigneron, Jeffrey P. Walker, Fatima Karbou, André Chanzy, Clément Albergel
2010 J jnl
Use of Soil Moisture Variability in Artificial Neural Network Retrieval of Soil Moisture.
Remote. Sens.
Soo-See Chai, Jeffrey P. Walker, Oleg Makarynskyy, Michael Kuhn, Bert Veenendaal, Geoff A. W. West
2010 J jnl
Validation of the ASAR Global Monitoring Mode Soil Moisture Product Using the NAFE'05 Data Set.
IEEE Trans. Geosci. Remote. Sens.
Iliana Mladenova, Venkat Lakshmi, Jeffrey P. Walker, Rocco Panciera, Wolfgang Wagner, Marcela Doubková
2009 J jnl
An Assessment of QuikSCAT Ku-Band Scatterometer Data for Soil Moisture Sensitivity.
IEEE Geosci. Remote. Sens. Lett.
Iliana Mladenova, Venkat Lakshmi, Jeffrey P. Walker, David G. Long, Richard de Jeu
2009 J jnl
Assessing the SMOS Soil Moisture Retrieval Parameters With High-Resolution NAFE'06 Data.
IEEE Geosci. Remote. Sens. Lett.
Olivier Merlin, Jeffrey P. Walker, Rocco Panciera, Maria José Escorihuela, Thomas J. Jackson
2009 J jnl
Improved Understanding of Soil Surface Roughness Parameterization for L-Band Passive Microwave Soil Moisture Retrieval.
IEEE Geosci. Remote. Sens. Lett.
Rocco Panciera, Jeffrey P. Walker, Olivier Merlin
2009 J jnl
Parameterization of the Land Parameter Retrieval Model for L-Band Observations Using the NAFE'05 Data Set.
IEEE Geosci. Remote. Sens. Lett.
Richard A. M. de Jeu, Thomas R. H. Holmes, Rocco Panciera, Jeffrey P. Walker
2009 J jnl
Using Passive Microwave Response to Soil Moisture Change for Soil Mapping: A Case Study for the Livingstone Creek Catchment.
IEEE Geosci. Remote. Sens. Lett.
Gregory K. Summerell, Victor Shoemark, Sandy Grant, Jeffrey P. Walker
2008 J jnl
A Simple Method to Disaggregate Passive Microwave-Based Soil Moisture.
IEEE Trans. Geosci. Remote. Sens.
Olivier Merlin, Abdelghani G. Chehbouni, Jeffrey P. Walker, Rocco Panciera, Yann Kerr
2008 J jnl
Comparison of Microwave and Infrared Land Surface Temperature Products Over the NAFE'06 Research Sites.
IEEE Geosci. Remote. Sens. Lett.
Robert M. Parinussa, Richard A. M. de Jeu, Thomas R. H. Holmes, Jeffrey P. Walker
2008 — conf
Explicit Inverse of Soil Moisture Retrieval with an Artificial Neural Network Using Passive Microwave Remote Sensing Data.
IGARSS (2)
Soo-See Chai, Bert Veenendaal, Geoff A. W. West, Jeffrey P. Walker
2008 — conf
Input Pattern According to Standard Deviation of Backpropagation Neural Network: Influence on Accuracy of Soil Moisture Retrieval.
IGARSS (2)
Soo-See Chai, Bert Veenendaal, Geoff A. W. West, Jeffrey P. Walker
2008 — conf
KU-Band Sensitivity to Soil Moisture. An Evaluation Study for Monitoring Temporal Soil Moisture Change Detection Over the NAFE06 Study Area.
IGARSS (2)
Iliana Mladenova, Venkat Lakshmi, Thomas J. Jackson, Jeffrey P. Walker
2008 J jnl
The NAFE'05/CoSMOS Data Set: Toward SMOS Soil Moisture Retrieval, Downscaling, and Assimilation.
IEEE Trans. Geosci. Remote. Sens.
Rocco Panciera, Jeffrey P. Walker, Jetse D. Kalma, Edward J. Kim, Jörg M. Hacker, Olivier Merlin, Michael Berger, Niels Skou
2007 C conf
The CoSMOS L-band experiment in Southeast Australia.
IGARSS
Kauzar Saleh-Contell, Yann H. Kerr, Gilles Boulet, Philippe Maisongrande, Patricia de Rosnay, Dana Floricioiu, Maria José Escorihuela, Jean-Pierre Wigneron, Aure Cano, Ernesto López-Baeza, Jennifer P. Grant, Jan E. Balling, Niels Skou, Michael Berger, Steven Delwart, Patrick Wursteisen, Rocco Panciera, Jeffrey P. Walker
2006 J jnl
A method for retrieving high-resolution surface soil moisture from hydros L-band radiometer and Radar observations.
IEEE Trans. Geosci. Remote. Sens.
Xiwu Zhan, Paul R. Houser, Jeffrey P. Walker, Wade T. Crow
2003 J jnl
Importance of soil moisture measurements for inferring parameters in hydrologic models of low-yielding ephemeral catchments.
Environ. Model. Softw.
S. A. Wooldridge, Jetse D. Kalma, Jeffrey P. Walker
2001 J jnl
A methodology for surface soil moisture and vegetation optical depth retrieval using the microwave polarization difference index.
IEEE Trans. Geosci. Remote. Sens.
Manfred Owe, Richard de Jeu, Jeffrey P. Walker