中文摘要：

介绍了基于地基干涉测量技术的微变形监测系统——IBIS-L系统的工作原理及关键技术。根据生产商给定的系统精度标称参数，设计了相应的精度检测方案，通过实验验证了IBIS-L系统对目标物变形量监测所能达到的精度及分辨率。实验表明，IBIS—L系统可以实现高精度的目标物微变形监测。

英文摘要：

The theoretical principles and key techniques of the IBIS-L system, which is a micro-deformation monitoring system based on the techniques of GB-InSAR, are introduced. Some experiments are designed for testing the parameters provided by the manufacturer, and the also accuracy and resolution of IBIS-L. The results indicate that IBIS-L can be applied in the micro-deformation monitoring projects of dams, landslides and some other objects with high accuracy.