GIS中DEM产品精度的分析和评价

ANALYSIS AND EVALUATION OF THE ACCURACY FOR THE DEM PRODUCTS IN GIS

从视觉上和统计上 ,对 3个目前国内主流的GIS软件的DEM产品作了精度分析 ,给出了其DEM的精度评价结果 ,对实际生产有一定的参考价值 ,有助于对软件的DEM产品质量形成一定的认识。

The accuracy of the DEM products of the three popular domestic GIS softwares is analyzed visually and statistically in this paper. This test offers some referenced value to the practical production, and is of service to gain some knowledge about the DEM products.