Search Results - Jeffrey P. Walker

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  1. 1

    Proximal Soil Moisture Sensing for Real-Time Water Delivery Control: Exploratory Study over a Potato Farm by Xiaoling Wu, Jeffrey P. Walker, Vanessa Wong

    Published in Agriculture (2023-06-01)
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  2. 2

    Maize On-Farm Stressed Area Identification Using Airborne RGB Images Derived Leaf Area Index and Canopy Height by Rahul Raj, Jeffrey P. Walker, Adinarayana Jagarlapudi

    Published in Agriculture (2023-06-01)
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  3. 3

    Evaluation of the Bayesian Downscaling Algorithm for Achieving Higher Resolution Soil Moisture Data by Xiaoling Wu, Jeffrey P. Walker, Nan Ye

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  4. 4

    Assimilation of Wheat and Soil States into the APSIM-Wheat Crop Model: A Case Study by Yuxi Zhang, Jeffrey P. Walker, Valentijn R. N. Pauwels, Yuval Sadeh

    Published in Remote Sensing (2021-12-01)
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  5. 5

    Spatial downscaling of SMAP radiometer soil moisture using radar data: Application of machine learning to the SMAPEx and SMAPVEX campaigns by Elaheh Ghafari, Jeffrey P. Walker, Liujun Zhu, Andreas Colliander, Alireza Faridhosseini

    Published in Science of Remote Sensing (2024-06-01)
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  6. 6

    Local Scale (3-m) Soil Moisture Mapping Using SMAP and Planet SuperDove by Jinyang Du, John S. Kimball, Rajat Bindlish, Jeffrey P. Walker, Jennifer D. Watts

    Published in Remote Sensing (2022-08-01)
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  7. 7

    GNSS-R Soil Moisture Retrieval for Flat Vegetated Surfaces Using a Physics-Based Bistatic Scattering Model and Hybrid Global/Local Optimization by Amir Azemati, Amer Melebari, James D. Campbell, Jeffrey P. Walker, Mahta Moghaddam

    Published in Remote Sensing (2022-06-01)
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  8. 8

    Comparison Between Thermal-Optical and L-Band Passive Microwave Soil Moisture Remote Sensing at Farm Scales: Towards UAV-Based Near-Surface Soil Moisture Mapping by Nan Ye, Jeffrey P. Walker, Ying Gao, Ivan PopStefanija, James Hills

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  9. 9

    Leaf nitrogen content estimation using top-of-canopy airborne hyperspectral data by Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Balaji Naik Banoth, Adinarayana Jagarlapudi

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  10. 10

    Improved GNSS-R Altimetry Methods: Theory and Experimental Demonstration Using Airborne Dual Frequency Data from the Microwave Interferometric Reflectometer (MIR) by Oriol Cervelló i Nogués, Joan Francesc Munoz-Martin, Hyuk Park, Adriano Camps, Raul Onrubia, Daniel Pascual, Christoph Rüdiger, Jeffrey P. Walker, Alessandra Monerris

    Published in Remote Sensing (2021-10-01)
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  11. 11

    A Comparison of Passive Microwave Emission Models for Estimating Brightness Temperature at L- and P-Bands Under Bare and Vegetated Soil Conditions by Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Xiaoji Shen, Nan Ye, Xiaoling Wu, In-Young Yeo, Nithyapriya Boopathi, Edward Kim, Yann H. Kerr, Thomas J. Jackson

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  12. 12

    SMAP soil moisture drying more rapid than observed in situ following rainfall events by Peter J. Shellito, Eric E. Small, Andreas Colliander, Rajat Bindlish, Michael H. Cosh, Aaron A. Berg, David D. Bosch, Todd G. Caldwell, David C. Goodrich, Heather McNairn, John H. Prueger, Patrick J. Starks, Rogier van derVelde, Jeffrey P. Walker

    Published in Geophysical Research Letters (2016-08-01)
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  13. 13

    Microwave Radiometry at Frequencies From 500 to 1400 MHz: An Emerging Technology for Earth Observations by 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. LeVine, Peggy E. OaNeill, 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

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