摘要
基于角反射器的合成孔径雷达干涉测量的地表形变监测,观测到的是不足整周的相位,为了获取变形完整相位,需要通过相位解缠恢复相位的整周数。针对CR-InSAR算法中相位解缠问题,利用GPS整周模糊度解算中的最小二乘模糊去耦调节法进行相位整周模糊度搜索,结合InSAR技术的特点建立合适的解算模型,并利用实际数据进行验证,解算结果证明搜索得到的整周数是合理的,且符合实际变形情况。
As using corner reflector-synthetic aperture radar interferometry （CR-InSAR） to monitor surface deformation, the integer parts of observed phase are lost. In order to obtain the integrated phase of deformation, it is necessary to unwrap phase. This paper studied the phase unwrapping problem of CR-InSAR, and made tests to apply the least squares ambiguity decorrelation adjustment method which is successfully applied in GPS ambiguities resolution to solve the problem of phase unwrapping according to modified model. On the basis of real data the unwrapping method is tested and reliable results are achieved.
出处
《大地测量与地球动力学》
CSCD
北大核心
2008年第3期100-103,共4页
Journal of Geodesy and Geodynamics
基金
Hong Kong Government,Research Grants Council(RGC)(B-Q02C)
关键词
整周模糊数
角反射器
相位解缠
二乘模糊去耦调节法
INSAR
Integer ambiguities
Corner Reflector （ CR ）
decorrelation adjustment ） method
InSAR phase unwrapping
LAMBDA （least squares ambiguity
