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ORCIDJeffrey P. Walker
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- affiliation: Monash University, Clayton, Vic, Australia
- affiliation: University of Melbourne, Vic, Australia
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2020 – today
- 2023
[j82]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: 1-13 (2023)- 2022
- [j81]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: 1-5 (2022) - [j80]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: 1-5 (2022) - [j79]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): 65 (2022) - [j78]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): 3129 (2022) - [j77]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): 3812 (2022) - [j76]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: 102-114 (2022) - [j75]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: 2370-2378 (2022) - [j74]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: 9716-9721 (2022) - [c43]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: 5610-5613 - 2021
- [j73]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: 102260 (2021) - [j72]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: 102282 (2021) - [j71]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: 102393 (2021) - [j70]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: 102584 (2021) - [j69]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): 504-508 (2021) - [j68]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): 797 (2021) - [j67]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): 4186 (2021) - [j66]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: 4894-4914 (2021) - [j65]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): 2922-2939 (2021) - [j64]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): 6814-6822 (2021) - [c42]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: 2009-2012 - 2020
- [j63]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): 1208 (2020) - [j62]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): 1759 (2020) - [j61]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: 1729-1739 (2020) - [j60]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): 3894-3905 (2020) - [c41]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: 3369-3372 - [c40]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: 4446-4449 - [c39]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: 5274-5277 - [c38]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: 5925-5928
2010 – 2019
- 2019
- [j59]James E. Hilton, Stefania Grimaldi, Raymond C. Z. Cohen, Nikhil Garg, Yuan Li, Steve P. Marvanek, Valentijn R. N. Pauwels, Jeffrey P. Walker:
River reconstruction using a conformal mapping method. Environ. Model. Softw. 119: 197-213 (2019) - [j58]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): 1120 (2019) - [j57]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): 3338-3350 (2019) - [c37]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: 4175-4178 - [c36]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: 5320-5323 - [c35]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: 6994-6997 - 2018
- [j56]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): 1652-1656 (2018) - [j55]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): 209-219 (2018) - [j54]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): 888-895 (2018) - [j53]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): 4513-4525 (2018) - [j52]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): 966-971 (2018) - [j51]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): 4906-4918 (2018) - [c34]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: 1407-1410 - [c33]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: 1434-1437 - [c32]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: 2027-2030 - [c31]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: 3707-3710 - [c30]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: 3768-3770 - [c29]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: 6139-6142 - [c28]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: 6143-6146 - 2017
- [j50]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): 179-183 (2017) - [j49]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): 1328-1332 (2017) - [j48]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): 1897-1914 (2017) - [j47]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): 3186-3193 (2017) - [j46]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): 6195-6206 (2017) - [j45]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): 6482-6493 (2017) - [c27]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: 2507-2510 - [c26]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: 2519-2522 - [c25]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: 2523-2526 - [c24]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: 2539-2542 - [c23]Antara Dasgupta, Stefania Grimaldi, R. Ramsankaran, Jeffrey P. Walker:
Optimized glcm-based texture features for improved SAR-based flood mapping. IGARSS 2017: 3258-3261 - [c22]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: 3941-3944 - [c21]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: 3945-3948 - [c20]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: 5533-5536 - [c19]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: 5637-5640 - 2016
- [j44]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): 456 (2016) - [j43]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): 597 (2016) - [j42]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): 5862-5879 (2016) - [j41]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): 981-989 (2016) - [j40]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): 4445-4460 (2016) - [j39]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): 4994-5007 (2016) - [j38]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): 5071-5080 (2016) - [c18]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: 125-128 - [c17]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: 143-146 - [c16]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: 1647-1650 - [c15]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: 3462-3465 - [c14]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: 3469-3472 - 2015
- [j37]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): 846-850 (2015) - [j36]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): 8858-8882 (2015) - [j35]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): 1456-1464 (2015) - [j34]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): 1921-1934 (2015) - [j33]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): 3507-3521 (2015) - [j32]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): 3906-3916 (2015) - 2014
- [j31]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): 711-715 (2014) - [j30]Karolina D. Fieber, Ian J. Davenport, Mihai A. Tanase, James M. Ferryman, Robert J. Gurney, Jeffrey P. Walker, Jörg M. Hacker:
Effective LAI and CHP of a Single Tree From Small-Footprint Full-Waveform LiDAR. IEEE Geosci. Remote. Sens. Lett. 11(9): 1634-1638 (2014) - [j29]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): 2090-2094 (2014) - [j28]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): 2178-2182 (2014) - [j27]Alberto Alonso Arroyo, Adriano Camps, Albert Aguasca, Giuseppe F. Forte, Alessandra Monerris, Christoph Rüdiger, Jeffrey P. Walker, Hyuk Park, Daniel Pascual, Raul Onrubia:
Dual-Polarization GNSS-R Interference Pattern Technique for Soil Moisture Mapping. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 7(5): 1533-1544 (2014) - [j26]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): 3683-3684 (2014) - [j25]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): 490-507 (2014) - [j24]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): 1749-1760 (2014) - [j23]Gift Dumedah, Jeffrey P. Walker,