An accurate SAR co-registration method for rugged terrain

Hai-jun Wei; Ju-bo Zhu; Dian-nong Liang

doi:10.1117/12.833004

30 October 2009 An accurate SAR co-registration method for rugged terrain

Hai-jun Wei, Ju-bo Zhu, Dian-nong Liang

Proceedings Volume 7494, MIPPR 2009: Multispectral Image Acquisition and Processing; 74942D (2009) https://doi.org/10.1117/12.833004
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China

Abstract

Accurate co-registration of synthetic aperture radar (SAR) images is essential for SAR interferometric applications such as along track interferometry (ATI) and across track interferometry (XTI). In this paper, we present a non-linear and linear joint algorithm for the SAR image co-registration which could be used in highly rugged terrain. First, a slave image transformation is performed by a non-linear mapping which is based on free available SRTM (Shuttle Radar Topography Mission) DEM (Digital Elevation Models) and orbit parameters of both tracks to correct the distortions related to different view angles. Second, we calculate linear offsets between master image and transformed slave image with ordinary correlation based method to correct the offsets related to orbital errors. Our initial results show the effectiveness of such algorithm in co-registering critical SAR images.

Citation Download Citation

Hai-jun Wei, Ju-bo Zhu, and Dian-nong Liang "An accurate SAR co-registration method for rugged terrain", Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74942D (30 October 2009); https://doi.org/10.1117/12.833004

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