摘要
在分析质量图原理及其在相位解缠中应用的基础上,提出了一种质量图和残差点相结合的InSAR干涉图相位解缠算法,算法以干涉图中残差点的分布信息为依据,优化质量阈值的确定方法,并以此为依据将干涉相位图划分为高低质量区域,指导相位解缠的顺利进行。通过使用不同质量图的实验结果表明,该方法减少了干涉图中有效信息的流失,并且指标明确,人工干预少,解缠结果较枝切法等经典方法更准确而有效。
We propose an algorithm which optimizes the way of choosing quality threshold according to the distribution of the residues. All the pixels of the wrapping phase figure are classified by this threshold into two types, high quality pixels and low quality pixels,and given different weights and then unwrapped. Experimental results show that the proposed algorithm has the advantages of less information loss, clearer guide line, fewer manual works, and it＇s precision is superior to some of the conventional algorithms such as the branch-cut algorithm.
出处
《遥感技术与应用》
CSCD
2008年第5期556-560,共5页
Remote Sensing Technology and Application
基金
国家自然科学基金资助项目(60375001)
高等学校博士点基金(20070532048)
湖南省自然科学基金(07JJ6135)资助项目
