基于局部最小生成树的干涉SAR二维相位展开
Two-Dimensional Phase Unwrapping for Interferometric SAR Based on Local Minimum Spanning Tree
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摘要: 二维相位展开是干涉SAR数据处理中的关键步骤之一.该文在分支优化模型的基础上提出一种基于局部最小生成树的干涉SAR二维相位展开算法.该算法克服了经典的Goldstein算法中残余点之间重复连接形成闭合区域的缺点.同时由于质量图的使用,优化了残余点的连接,局部最小化了分支的总长度,实验结果证实了该算法的有效性.Abstract: In this paper, a new approach to two-dimensional phase unwrapping for in- terferon ictric SAR, based on local iuiniiiiitin spanning tree is presented deriving liy branch optimum model. This approach avoids separated interferograin into isolated regions resuh- ing in incomplete unwrapped phase by traditional connecting residues methods. Guided by quality snap, the connecting of residues is proposed exactly and optimized. The experiments on real interferograni show the validity of this approach.
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