Conference Proceedings

INTERCOMPARISON OF X- AND C-BANDS ACTIVE MICROWAVE SOIL MOISTURE RETRIEVALS OVER DRYLAND WHEAT FIELDS

Liangliang Tao, Dongryeol Ryu, Andrew Western, Sun-Gu Lee

IGARSS 2020 - 2020 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 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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