Space-Variant Motion Compensation in Ultra-high Resolution Airborne Spotlight SAR

Han Bing; Ding Chi-biao; Liang Xing-dong; Li Dao-jing

doi:10.3724/SP.J.1146.2008.00073

Volume 31 Issue 5

Dec. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2009 > 31(5): 1249-1252

Han Bing, Ding Chi-biao, Liang Xing-dong, Li Dao-jing. Space-Variant Motion Compensation in Ultra-high Resolution Airborne Spotlight SAR[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1249-1252. doi: 10.3724/SP.J.1146.2008.00073

Citation:

Han Bing, Ding Chi-biao, Liang Xing-dong, Li Dao-jing. Space-Variant Motion Compensation in Ultra-high Resolution Airborne Spotlight SAR[J]. Journal of Electronics & Information Technology, 2009, 31(5): 1249-1252. doi: 10.3724/SP.J.1146.2008.00073

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Space-Variant Motion Compensation in Ultra-high Resolution Airborne Spotlight SAR

doi: 10.3724/SP.J.1146.2008.00073

Received Date: 2008-01-17
Rev Recd Date: 2008-07-11
Publish Date: 2009-05-19

Abstract

Abstract

The compensation for space-variant motion errors is one of the main issues in ultra-high resolution airborne SAR imaging. This paper first discusses the characteristics of space-variant motion errors of airborne spotlight SAR, and deduces the quantificational relationship between space-variant motion errors and SAR imaging parameters such as scan angle, size of illuminated scene and grazing angle. Then, it presents a comprehensive processing scheme for motion compensation of high resolution airborne spotlight SAR, which is based on the sub-patches processing and a new method of range resample using chirp disturbance. This scheme can make up for the deficiency of traditional process and deals well with severe space-variant motion errors in ultra-high resolution imaging. Finally, computer simulations prove the validity of the scheme.

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References(1)

References

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