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| Distributed Satellites SAR High Resolution Imaging via Spectral Synthesis |
| Yan Hong-hui①②; Wang Yan-fei①; Zhang Bing-chen② |
| ①Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;②Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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Abstract In this paper, a distributed satellites SAR high resolution imaging method based on spectral synthesis is introduced. In distributed satellites SAR system, the scattering spectrums relative to the same scene acquired by different satellites have spectrum shifts in both range and azimuth directions, when join these shifted spectrums to a wider range and azimuth spectrum, a higher range and azimuth resolution can be acquired. In the processing, InSAR technique can be used to estimate the phase difference of the images. And after phase correction procedure, image combination procedure has been done, a higher resolution image both in range and azimuth direction would be generated. In this paper a theoretical analysis of this method is given, and the simulation results are also provided.
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Received: 02 August 2004
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2006, Vol. 28 
