Retrieval of soil moisture using SIR-C polarimetric data |
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Authors: | K S Rao Y S Rao H K Al Jassar |
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Institution: | 1. Department of Physics, Kuwait University, Kuwait, Kuwait 2. Indian Institute of Technology Bombay, CSRE, Bombay, India
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Abstract: | Spaceborne Imaging Radar (SIR-C) polarimetric data acquired over Gujarat test site, India, during April and October 1994 were processed to retrieve soil moisture and surface roughness using multi-polarization techniques. Synchronous field data were collected and compared with the results obtained using SIR-C data. Indian Remote Sensing Satellite (IRS) images in visible region were used for locating groundtruth points. Multi-polarization inversion techniques are found to be sensitive to retrieval of soil moisture and surface roughness parameters. However, the accuracy is not adequate. There is a need to improve the existing inversion models to suit to the Indian agricultural fields. |
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