Citation: | WU Xuerui, OUYANG Xinqiu, WANG Fang, et al. Bare soil circular polarization scattering properties for GNSS-R applications[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(10): 1883-1889. doi: 10.13700/j.bh.1001-5965.2019.0553(in Chinese) |
GNSS-R is a new way of earth observation that uses the reflected signals of navigation satellites to remotely sense the geophysical parameters. Its unique feature is the circular polarization scattering. This paper employs the advanced integral equation model of bistatic scattering as a tool, and uses polarization synthesis to convert the random rough surface scattering model into a microwave scattering model that can calculate various polarizations. Simulation and analysis of the circular polarization scattering characteristics of bare soil under different observation geometries and different soil moisture contents are carried out. To some extent, the development of the random rough surface circular polarization scattering model fills the gap in the GNSS-R mechanism, and provides a tool for the subsequent further inversion of soil moisture.
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