关于DEM数据质量检查内容和方法的探讨

生产方式、资料精度、生产人员素质都会影响DEM数据的最终质量。本文结合多年的DEM数据质量检查工作,从检查内容出发,结合检查方法探讨DEM的质量控制。并在此基础上给出了ArcGIS平台下的检查方法,提出了适合程序实现的高程异常值探测新方法,有助于提高DEM数据质量检查的效率,对生产单位在DEM数据生产过程中避免出现一些技术问题有一定的借鉴作用。

Discussion on the Contents and Method of DEM Data Checking

The difference of production mode, the accuracy of the data, the quality of the production staff will affect the final quality of DEM data.Combined with years of DEM data quality inspection, quality control DEM processing explore multiple perspectives from the content, methods, issues is discussed in this paper.On this basis, the inspection method of ArcGIS platform is given, especially proposed new method for detecting abnormal height value for program implementation, help to improve the efficiency of DEM data quality checks, beneficial for production units avoiding DEM data production process problems.