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| Performance Analysis and Baseline Estimation for Distributed-Satellite ATI-SAR Systems |
| Yu Hui①②; Yan Hong-hui①; Wang Yan-fei① |
| ①Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;②Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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Abstract In the application of distributed-satellite Along-Track InterferometrySAR (ATI-SAR) for Ground Moving Target Indication (GMTI), measurement error of baseline will affect the system’s GMTI performance. This paper analyzes the satellite cluster’s actual flying tracks, establishes the velocity-error model caused by baseline-measurement error considering the baseline’s time-variety, proposes a novel method to measure baseline accurately and obtain perfect performance of system’s GMTI. Finally, the simulation experimental results prove the conclusion proposed.
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Received: 19 June 2008
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2009, Vol. 31 
