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《Remote Sensing Technology and Application》 2011-01
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Measurement and Simulation of Hill-slope Effects on Passive Microwave Remote Sensing

LI Xin-xin1,2,ZHANG Li-xin1,2,JIANG Ling-mei1,2,ZHAO Shao-jie1,2,ZHAO Tian-jie1,2(1.State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China;2.School of Geography and Remote Sensing Science,Beijing Normal University,Beijing 100875,China)  
Hill-slope terrain has an essential influence on microwave radiation due to slope angles and aspects.It is necessary to experiment in the field by observed different topographic landscapes we designed based on the trunk-mounted microwave radiometer.In the configuration of AMSR-E,the observed data compared with simulations of relief effects modeled by AIEM and Fresnel equation.The result shows there are 10~15K bias of brightness temperatures affected by tilted angles between flat terrain and mountainous terrain.When frequencies less than 10 GHz,the relief effect of terrain elevation becomes weakened.And we certified that microwave polarization path and direction changed for surface geometrical property,such as shape and the orientation of hills.
【Fund】: 国家973计划项目(2007CB714403)资助;; 欧盟FP7计划项目“青藏高原土壤水分产品反演”(212921)资助
【CateGory Index】: TP722.6
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