Conceptual study of lunar-based SAR for global change monitoring

查看全文 作　　者：GUO [1]HuaDong;DING [1,2]YiXing;LIU [1]Guang;ZHANG [1]DaoWei;FU [1]WenXue;ZHANG [1]Lu

机构地区：[1]Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences;[2]College of Resources and Environment University of Chinese Academy of Sciences

出　　处：《Science China Earth Sciences》索引2014年第57卷第8期,共9页

基　　金：supported by National Basic Research Program of China (Grant No. 2009CB723906);National Natural Science Foundation of China (Grant No. 60972141) 摘　　要：As an active microwave remote sensing imaging sensor, Synthetic Aperture Radar(SAR) plays an important role in earth observation. Here we establish a SAR system based on the platform of the moon. This will aid large-scale, constant, and long-term dynamic Earth observations to better meet the needs of global change research and to complement the space borne and airborne earth observations. Lunar-based SAR systems have the characteristics of high resolution and wide swath width. The swath width could be thousands of kilometers in the stripe mode and it could cover 40% of earth's surface with 10 meters or even higher spatial resolution in the scanning mode. Using the simplified observation model, here we quantitatively analyze the spatial resolution and coverage area of lunar-based SAR and simulate the observation on the Qinghai-Tibet plateau and the Amazon plain. The results show that this system could provide near 100% daily coverage of the Qinghai-Tibet plateau, whereas 40% to 70% daily coverage of the Amazon plain. Lunar-based SAR could provide large-scale, long-term and stable time series data in order to support future research of global change. 关键词：SAR系统全球变化农历空间分辨率亚马逊平原监测合成孔径雷达时间序列数据

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Conceptual study of lunar-based SAR for global change monitoring

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