Study of Spaceborne Spotlight SAR Coregistration Algorithm

被引：0
|
作者：
Ren, Xiaozhen [1 ]
Qin, Yao [1 ]
Fu, Hongliang [1 ]
机构：
[1] Henan Univ Technol, Coll Informat Sci & Engn, Zhengzhou 450000, Peoples R China
来源：
ADVANCED MATERIALS IN MICROWAVES AND OPTICS | 2012年 / 500卷
关键词：
Spotlight SAR; Coregistration; Adaptive subspace projection; Doppler centroid drift;
D O I：
10.4028/www.scientific.net/KEM.500.368
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The azimuth resolution of Spotlight SAR is analyzed from the azimuth antenna pattern weighting, and the effect of the azimuth-varying Doppler on Spotlight SAR interferometry is studied. A coregistration algorithm based on adaptive subspace projection is proposed for Spotlight SAR interferometry. In this method, an adaptive factor is introduced to select the sample number of joint covariance matrix based on the coherence value. Moreover, the Doppler centroid drift in the azimuth direction is also considered in spotlight SAR images coregistration. The method is validated with the real data from the GERMAN radar satellite TerraSAR-X.
引用
收藏
页码：368 / 373
页数：6
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