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《Science of Surveying and Mapping》 2010-01
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Imaging performance analysis for near-space passive bistatic SAR remote sensing

WANG Wen-qin①②,CAI Jing-ye①,PENG Qi-cong①(①School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;②Beijing Key Lab of Spatial Information Integration and 3S Engineering Applications,Peking University,Beijing 100871,China)  
The interest in near-space has increased greatly in recent years.As near-space has the combined advantages of airspace and aerospace,the sensors placed in near-space platforms can provide both wide coverage like spaceborne sensors and fast revisit speed like airborne sensors.This opens a door to many new remote sensing applications.As such,this paper proposed a near-space aerocraft-based passive bistatic synthetic aperture radar(SAR) imaging technique.The spatial configuration and its corresponding signal model are described,along with the analysis of spatial resolutions including range resolution and azimuth resolution.The spatial variable characteristics of azimuth chirp rate and their impacts on subsequent high-resolution image formation are also investigated.Taking the passive receiver is stationary as an example,imaging simulations are performed.Theoretical analysis and computer simulation results show that near-space passive bistatic SAR is indeed one promising remote sensing technique.
【Fund】: 北京大学数字中国研究院“为新研究”基金(SIIBKL08-1-04);; 中国科学院海洋环流与波动重点实验室开放研究基金(KLO-CAW0809)
【CateGory Index】: TN957.52
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