Meng Da-di, Ding Chi-biao. A New Approach to Compensating Spatially Variant Phase Error in Airborne Wideband SAR[J]. Journal of Electronics & Information Technology, 2007, 29(10): 2375-2378. doi: 10.3724/SP.J.1146.2006.00256
Citation:
Meng Da-di, Ding Chi-biao. A New Approach to Compensating Spatially Variant Phase Error in Airborne Wideband SAR[J]. Journal of Electronics & Information Technology, 2007, 29(10): 2375-2378. doi: 10.3724/SP.J.1146.2006.00256
Meng Da-di, Ding Chi-biao. A New Approach to Compensating Spatially Variant Phase Error in Airborne Wideband SAR[J]. Journal of Electronics & Information Technology, 2007, 29(10): 2375-2378. doi: 10.3724/SP.J.1146.2006.00256
Citation:
Meng Da-di, Ding Chi-biao. A New Approach to Compensating Spatially Variant Phase Error in Airborne Wideband SAR[J]. Journal of Electronics & Information Technology, 2007, 29(10): 2375-2378. doi: 10.3724/SP.J.1146.2006.00256
A new motion compensation algorithm dealing with spatially variant phase error in azimuth direction is purposed in this article. Traditionally, only the spatially invariant part of phase error can be compensated and the residual spatially variant part is ignored. It is essential to compensate the spatially variant part of phase error in the high resolution wideband SAR. The new algorithm purposed in this article manages this part of phase error by splitting the SAR data to several sub-apertures in range-Doppler domain and compensates the spatially variant phase error respectively. The azimuth resolution is enhanced when the new algorithm is embedded into the traditional motion compensation algorithm.
Eichel P H, Ghiglia D C, and Jakowatz C V Jr. Speckle processing method for synthetic-aperture-radar phase correction[J].Optical Letters.1989, 14(1):1-3[2]Fornaro G. Trajectory deviations in airborne SAR: Analysis and compensation[J].IEEE Trans. on Aerospace and Electronic Systems.1999, 35(3):997-1009[3]Kirk D R and Maloney R P. Impact of platform motion on wide-angle synthetic aperture radar(SAR) image quality. Proceedings of the 1999 IEEE Radar Conference, Waltham, April 1999: 20-22.[4]Carrara W, Tummala S, and Goodman R. Motion compensation algorithm for wide beam stripmap SAR. Proceedings of the SPIE, Orlando FL, April 1995, 2487: 13-23.[5]张澄波. 综合孔径雷达原理、系统分析与应用.北京：科学出版社，1989, 第4章.
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