合成孔径雷达差分干涉测量（D-In SAR）技术是近几年迅速发展的一种监测地壳形变的新型测量技术，它具有高精度、全天候、可以进行大范围城市地表变形监测等优点。本文介绍了 D-In SAR 技术的基本原理、D-In SAR 技术在城市地表变形监测中的处理流程、探讨了制约 D-In SAR 技术监测城市地表变形精度的主要因素及其解决方法。%Differential interferometry synthetic aperture radar (D - In SAR) technology has been developing rapidly In recent years. It is a new type of measurement technology for crustal deformation with the advantage of high precision, all-weather application, and wide range monitoring. In this paper, the basic principle and monitoring process of D - In SAR technology were introduced, and the influence factors of the measurement precision were discussed.
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