InSAR技术用于矿山开采沉陷与滑动测量比城市地面沉降监测更复杂。植被覆盖或大尺度地表沉滑会导致严重的雷达失相干，使得中低分辨率SAR差分干涉相位解缠困难，矿区塌陷甚至超出其可测量程，无法得到从毫米级形变到数十米形变的全尺度矿山沉滑结果。实现地表大小尺度形变有效监测已成为InSAR研究者关注的重大科学难题。本课题拟利用高分SAR的宽带宽、高回波强度等特性，研究联合高分SAR和地基SAR等数据的差分干涉方法，实现开采地表微小形变量测；研究基于互协方差函数的Offset-Tracking方法和结合CR的高分SAR数据的子带差分干涉技术，后者利用扩大虚拟波长和形变模糊度，减轻或避免相位解缠，解决包括严重植被覆盖地表的大尺度沉滑监测问题；研究星载SAR与地基SAR监测结果的融合，优化空间三维形变矢量，形成一套数据和方法的融合理论，为构建一个能应对矿山全尺度三维InSAR沉滑监测系统奠定理论基础。

Spaceborne InSAR techlonogy is an effective tool used for urban ground subsidence monitoring.However,but it proves to be problematic by monitoring mining subsidence and sliding. Dense vegetation coveragy and rapid large-scale ground moving,lead to a serious decorrelation scenario. In these cases,conventional D-InSAR(Differential Interferometry Synthetic Aperture Radar,D-InSAR) using low-resolution data suffers from difficult phase unwrapping,the measurable displacemant value is also limited in a small range. How to implement the full-scale ground surfase deformation monitoring in mining area becomes a considerable scientific issue. This proposal aims to make some progress in the following aspects: to realize the high-precise monitoring for slow and small ground deformation by use of integration of high-resolution Spaceborne SAR and GB-SAR interferometry; to approach a new method of ground deformation measurement for large-scale movements and gradient by means of offset-tracking based on local covariance function and an innovative InSAR method "CR Based subband-InSAR". The CR Based Subband-InSAR can extend the original small radar carrier wavelength to a large virtual wavelength, and increase the displacement ambiguity, so reduce or eliminate the phase unwrapping process; finally, to investigate the fusion of the results from spaceborne SAR and GB-SAR interferometry for estimating the three dimentional deformation vector in mining area. It is expected that the achievements of the project may provide a theoretical and practical suppot to construct a flexible full-scale three dimentional InSAR ground surfase deformation monitoring system.