An improved elevation model of InSAR which expresses the direct relationship be-tween height and phase has been developed based on the InSAR elevation model of Currie and Baker.

On this basis,using ICESAT altimeter data to determine the Antarctic ice sheet elevation model,ICESAT satellite laser altimetry data were compared with GPS data measured Antarctic expedition.

The mean ENVISAT-DEM of 3 years over Antarctic ice sheet is derived from ENVISAT altimeter data applied relocation and geophysical correction.

The improvement and application of DEM for rivers;

Comprehensive Review on Error Analysis and Accuracy Appraisal of DEM;

Application of GIS and DEM to the analysis of deposition and erosion of foreshore in the Yangtze River estuary;

Polygon region method of digital elevation model generation;

Application of GIS digital elevation model technology in urban planning design;

Estimation of the rice planting area using digital elevation model and multitemporal moderate resolution imaging spectroradiometer;

The studying area is divided into a lot of regular grids and the elevation value of roof and floor is interpolated using Inverse Distance to a Power to form Digital Elevation Model (DEM).

The models for the small drainage areas were extended into a large area by improving the digital elevation model (DEM) data from a single block to a series of data blocks.