Motion measurement errors and autofocus in bistatic SAR

被引：37
|
作者：
Rigling, BD [1 ]
Moses, RL
机构：
[1] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA
[2] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
来源：
IEEE TRANSACTIONS ON IMAGE PROCESSING | 2006年 / 15卷 / 04期
关键词：
autofocus; bistatic; ground map; motion measurement errors motion measurement errors (MMEs); synthetic aperture radar (SAR);
D O I：
10.1109/TIP.2005.863943
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper discusses the effect of motion measurement errors (MMEs) on measured bistatic synthetic aperture radar (SAR) phase history data that has been motion compensated to the scene origin. We characterize the effect of low-frequency MMEs on bistatic SAR images, and, based on this characterization, we derive limits on the allowable MMEs to be used as system specifications. Finally, we demonstrate that proper orientation of a bistatic SAR image during the image formation process allows application of monostatic SAR autofocus algorithms in postprocessing to mitigate image defocus.
引用
收藏
页码：1008 / 1016
页数：9
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