摘要
相位解缠是干涉合成孔径雷达(InSAR)测量地形高程的重要步骤之一[1]。由噪声和欠采样导致的相位不一致性问题是相位解缠的难点。本文分析了相位解缠最小二乘算法的原理和性质,总结了算法的优缺点。最后采用加拿大RadarSat1数据进行实验,验证了分析的结果。
Phase unwrapping of the interferometric SAR is a very important step to obtain an accurate DEM（Digital Elevation Model）. The phase inconsistency or path dependence is a main problem encountered when phase unwrapping techniques are applied. In this paper, the theories and properties of some leastsquares algorithms are analyzed and compared. Each algorithm is suitable for given data, and the choice of the algorithms is depended on the data. Last, phase unwrapping results of Canada RadarSatl data are shown and validated.
出处
《雷达科学与技术》
2005年第4期216-220,共5页
Radar Science and Technology
基金
科技部重大基础研究项目(No.2001CCC02100)
