InSAR相位解缠算法比较及误差分析

基金项目: 湖北省青年杰出人才基金资助项目(2002AC011);高等学校博士点专项基金资助项目(20030486038);地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(02-09-06);武汉大学知识创新工程基金资助项目

详细信息

Comparison of InSAR Phase Unwrapping Algorithms and Error Analysis

School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

摘要: 介绍和比较了残差缺口法、最小二乘法和统计耗费网络流算法,并研究了解缠相位误差对DEM和地壳变形的影响。通过理论分析和实际计算发现,无论计算效率还是解缠精度,残差缺口法都优于最小二乘法。统计耗费网络流算法在残差缺口算法基础上又有创新,是一种最具潜力的新型算法。
- InSAR /
- 二维相位解缠 /
- 残差缺口法 /
- 最小二乘法 /
- 统计耗费网络流算法
Abstract: This paper compares three kinds of phase unwrapping algorithms, residue-cut algorithm, leastsquare algorithm and statistical-cost network-flow algorithm.From the comparison, it can be concluded that Goldstein residue-cut method is superior to the least-squares method, both in calculation efficiency and in unwrapping precision.Lastly, the height error caused by the bias of unwrapped phase is analyzed.
- InSAR /
- 2D phase unwrapping /
- residue-cut /
- least-squares /
- statistical-cost network-flow algorithms