基于闭合环的InSAR解缠误差探测方法研究

摘要

基于Sentinel-1数据,提出一种基于多个干涉图闭合环的残差探测解缠误差方法.以形变量较大的墨西哥城区为实验场,分别采用不同的闭合环对同一个干涉对进行探测,结果具有较好的符合性.%Normal difference interferograms record phases with an un-integer cycle.An unwrapping procedure is needed to recover the true ground deformation.Due to external factors,such as earthquake occurrence and fault effect,the interferograms are vulnerable to unwrapping error.The positioning of the errors is vital to further computation.This paper,based on Sentinel-1A data,proposes a checking unwrapping error method with multiple closed loops of interferograms.It takes Mexico city as the study area.Its good consistency represents better results.