Conference Proceedings
Intercomparison of X- and C-Bands Active Microwave Soil Moisture Retrievals over Dryland Wheat Fields
L Tao, D Ryu, A Western, SG Lee
International Geoscience and Remote Sensing Symposium IGARSS | IEEE | Published : 2020
Abstract
KOMPSAT-5 is an X-band satellite that has a great potential for high-resolution soil moisture retrieval over agricultural regions. In the present paper, comparison between the soil moisture estimations from the widely used Sentinel-1 (C-band) and KOMPSAT-5 (X-band) is conducted for a dryland wheat field site located in Victoria State of Australia. This study uses a semi-empirical vegetation scattering model to invert radar signal and retrieve soil moisture based on KOMPSAT-5 and Sentinel-1 images and the retrieval model is calibrated by field measurements. In this model, normalized difference water index (NDWI) is applied for the parameterization of vegetation water content and the estimatio..
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Grants
Awarded by University of Melbourne - Korea Aerospace Research Institute
Funding Acknowledgements
This work is supported by the University of Melbourne Research Contract #300405 sponsored by the Korea Aerospace Research Institute, and by the State Scholarship Fund of China.