中文摘要：

InSAR是一种能够全天候、高精度、大面积获取地形、形变细部信息的高效工具，而大气层中的电离层是制约InSAR精度和可靠性其中一个很重要的因素，对L波段及低频InSAR的影响尤为严重．本文着重从电离层延迟误差，距离向和方位向偏移现象以及法拉第效应等三个方面介绍电离层TEC及闪烁对InSAR相干系数、干涉相位及其产品的影响，并给出相应的改正方案．紧接着，给出一些应用实例．最后，对InSAR中的电离层效应进行了总结和展望．

英文摘要：

InSAR provides a new geodetic tool, which has been widely used for its remarkable ability to map global terrain and monitor ground deformations efficiently with high accuracy day and night and under nearly all weather conditions. The ionosphere is one kind of limiting factors which hamper the accuracy and reliability for L band and more severely for lower frequency InSAR. A brief review of ionospheric effects on InSAR and methods adopted to reduce the impacts is presented systematically. The major effects include ionospheric signal delay difference along radio ray paths, target displacement or resolution degradation in azimuth and range direction duo to TEC and scintillation, polarization changes due to Faraday rotation, etc. Then the correction approaches are summarized and described in this paper, which have more or less effect on the coherence and interferogram even the DEM, deformation, and other products. And we show some typical case studies. Finally, we propose to mitigate those effects with several rapidly developing and developed techniques.