中文摘要：

研究基于地基合成孔径雷达干涉技术的微变形监测系统（IBIS-L）的组成及关键技术,并与TCA2003全站仪进行变形监测精度对比。大坝变形监测试验研究表明,该系统能以优于毫米级精度实现大坝高空间分辨率以及连续的变形监测。

英文摘要：

The components and key techniques of the IBIS-L system were studied by means of the ground-based synthetic aperture radar interferometry（GBInSAR）.The deformation accuracy of the GBInSAR-based IBIS-L system was compared with that of the total station TCA2003.The test results of dam deformation monitoring indicate that： the IBIS-L system can be employed to monitor dam deformation with both high spatial and temporal resolutions with accuracy better than one millimeter.