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Deriving Soil Moisture with the Combined L-Band Radar and Radiometer MeasurementsIn this study, we develop a combined active/passive technique to estimate surface soil moisture with the focus on the short vegetated surfaces. We first simulated a database for both active and passive signals under SMAP s sensor configurations using the radiative transfer model with a wide range of conditions for surface soil moisture, roughness and vegetation properties that we considered as the random orientated disks and cylinders. Using this database, we developed 1) the techniques to estimate surface backscattering and emission components and 2) the technique to estimate soil moisture with the estimated surface backscattering and emission components. We will demonstrate these techniques with the model simulated data and its validation with the airborne PALS image data from the soil moisture SGP 99 and SMEX 02 experiments.
Document ID
20110011764
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Shi, Jiancheng
(California Univ. Santa Barbara, CA, United States)
Chen, K. S.
(National Central Univ. Chung-Li, Taiwan, Province of China)
Tsang, L.
(Washington Univ. Seattle, WA, United States)
Jackson, T.
(Department of Agriculture Beltsville, MD, United States)
Njoku, E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Van Zyl, J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
O'Neill, P. O.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Entekhabi, D.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Johnson, J.
(Ohio State Univ. Columbus, OH, United States)
Moghaddam, M.
(Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2011
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC.CP.4276.2011
Meeting Information
Meeting: 2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2011)
Location: Vancouver
Country: Canada
Start Date: July 24, 2011
End Date: July 29, 2011
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other

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