中文摘要：

合成孔径雷达干涉测量已广泛应用于高精度数字高程模型的生产，本文在深入分析合成孔径雷达干涉测量原理的基础上，基于相关InSAR开放源代码软件，在Linux系统下，初步构建了一个干涉测量处理软件平台，利用欧空局提供的Envisat卫星数据，成功提取了国外某地区高精度的数字高程模型。通过与高精度SRTM数据的对比，发现实验所获取的DEM更平滑，分辨率更高，证明了本文所构建的干涉处理软件平台可靠有效。

英文摘要：

Interferometer Synthetic Aperture Rader （InSAR） technique has been widely used to generate accurate digital elevation model （DEM）. In this paper, the main principle of InSAR is described. Based on open-source software, a basic framework of InSAR processing is given. And the functional software tools for InSAR processing in Linux system have been developed. As Envisat SAR data adopted, it successfully obtained the accurate digital elevation model of a foreign area. Contrasting with SRTM DEM, the DEM obtained is better than SRTM DEM. Therefore, it can prove that the InSAR processing software based on open-source software should be reliable.