InSAR提取矿区DEM技术方法研究及应用

t present, InSAR (Synthetic aperture radar interferometry) has wider and wider application. However, it’s actual application in the mine area is rare in China, largely as a result of complex terrain and vegetation covering . We can acquire the DEM of mine zone by InSAR, but should analyze the method with the character of mine zone. This paper focuses on the technology and method on DEM extraction from InSAR in mine zone, the problem we should pay attention to during data selection and processing for the characteristics of the mining area, and acquires DEM of some mine zone by InSAR with the ENVISAT data. The results show that the DEM has been in line with the actual terrain of the mining area. The elevation of the flat areas has a precision of 10-20 meters, but the elevation precision in large slope region is low, even the error that elevation precision is above 100 meters appears. Finally, make recommendations for further improvement of the precision of DEM.