An airborne simulation of the SMAP data stream. - Jeffrey P. Walker; Peggy O'Neill; Xiaoling Wu 001; Ying Gao 002; Alessandra Monerris; Rocco Panciera; Thomas J. Jackson; Douglas A. Gray 001; Dongryeol Ryu (IGARSS, 2012)

The Soil Moisture Active Passive Experiments (SMAPEx): Toward Soil Moisture Retrieval From the SMAP Mission. - Rocco Panciera; Jeffrey P. Walker; Thomas J. Jackson; Douglas A. Gray 001; Mihai A. Tanase; Dongryeol Ryu; Alessandra Monerris; Heath Yardley; Christoph Rüdiger; Xiaoling Wu 001; Ying Gao 002; Jörg M. Hacker (IEEE Trans. Geosci. Remote. Sens., 2014)

Optical Sensing of Vegetation Water Content: A Synthesis Study. - Ying Gao 002; Jeffrey P. Walker; Mahdi Allahmoradi; Alessandra Monerris; Dongryeol Ryu; Thomas J. Jackson (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2015)

Estimation of Vegetation Water Content From the Radar Vegetation Index at L-Band. - Yuancheng Huang; Jeffrey P. Walker; Ying Gao 002; Xiaoling Wu 001; Alessandra Monerris (IEEE Trans. Geosci. Remote. Sens., 2016)

Multi-frequency radiometer-based soil moisture retrieval algorithm parametrization using in situ validation sites. - Ying Gao 002; Andreas Colliander; Mariko S. Burgin; Jeffrey P. Walker; Chun-Sik Chae; Emmanuel P. Dinnat; Michael H. Cosh (IGARSS, 2017)

Intercomparison of Alternate Soil Moisture Downscaling Algorithms Using Active-Passive Microwave Observations. - Xiaoling Wu 001; Jeffrey P. Walker; Christoph Rüdiger; Rocco Panciera; Ying Gao 002 (IEEE Geosci. Remote. Sens. Lett., 2017)

Medium-Resolution Soil Moisture Retrieval Using the Bayesian Merging Method. - Xiaoling Wu 001; Jeffrey P. Walker; Christoph Rüdiger; Rocco Panciera; Ying Gao 002 (IEEE Trans. Geosci. Remote. Sens., 2017)

Intercalibration of Low Frequency Brightness Temperature Measurements For Long-Term Soil Moisture Record. - Emmanuel P. Dinnat; Mariko S. Burgin; Andreas Colliander; Chun-Sik Chae; Michael H. Cosh; Ying Gao 002 (IGARSS, 2018)

L-, C- and X-Band Passive Microwave Soil Moisture Retrieval Algorithm Parameterization Using in Situ Validation Sites. - Ying Gao 002; Andreas Colliander; Mariko S. Burgin; Jeffrey P. Walker; Chun-Sik Chae; Emmanuel P. Dinnat; Michael H. Cosh; Todd Caldwell; Aaron Berg; José Martínez-Fernández (IGARSS, 2018)

Evaluation of the Tau-Omega Model for Passive Microwave Soil Moisture Retrieval Using SMAPEx Datasets. - Ying Gao 002; Jeffrey P. Walker; Nan Ye; Rocco Panciera; Alessandra Monerris; Dongryeol Ryu; Christoph Rüdiger; Thomas J. Jackson (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2018)

The Soil Moisture Active Passive Experiments: Validation of the SMAP Products in Australia. - Nan Ye; Jeffrey P. Walker; Xiaoling Wu 001; Richard de Jeu; Ying Gao 002; Thomas J. Jackson; François Jonard; Edward Kim 001; Olivier Merlin; Valentijn R. N. Pauwels; Luigi J. Renzullo; Christoph Rüdiger; et al. (IEEE Trans. Geosci. Remote. Sens., 2021)

Comparison Between Thermal-Optical and L-Band Passive Microwave Soil Moisture Remote Sensing at Farm Scales: Towards UAV-Based Near-Surface Soil Moisture Mapping. - Nan Ye; Jeffrey P. Walker; Ying Gao 002; Ivan Popstefanija; James Hills (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2024)