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《Journal of Geodesy and Geodynamics》 2017-01
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Theoretical Study for Bare Soil Delay Doppler Map Based on GNSS+R

WU Xuerui;JIN Shuanggen;ZHANG Qinyun;DONG Yanfang;Shanghai Astronomical Observatory,CAS;Key Laboratory of Planetary Sciences,CAS;School of Communication and Information Engineering,Shanghai University;Institute of Earthquake Science,CEA;  
This paper focuses on the study of scattering properties.Based on the ocean GPS scattering model,a bare soil GPS scattering model is established.Considering the bistatic radar cross section,a random roughness scattering model is employed.After the modification,the effects of soil parameters(soil moisture and surface roughness)on delay Doppler map at different polarizations are simulated.This theoretical study is helpful for the interpretation of data from airborne/spaceborne GNSS-R receivers,experimental design and the inversion algorithm development.At the same time,the results of the delay Doppler map model can also provide a theoretical basis for the study of GNSS+R soil moisture remote sensing.
【Fund】: 国家自然科学基金(41501384;41101333;41304002);; 中国地震局地震预测研究所基本科研业务费(2014IES0403)~~
【CateGory Index】: P237
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