面向分布式水文模型的SRTM无效高程数据处理方法Disposition methods of SRTM invalid terrain data for distributed hydrological model
邓丽,范荣双,梁勇,张承明
摘要(Abstract)：
获取高精度DEM是分布式水文模型开发和应用的基础,而最新发布的全球高分辨率SRTM数据在很大程度上解决了高分辨率DEM数据获取相对困难的问题,对于水文学研究具有重要意义。由于利用雷达技术获取地面高程数据技术本身的限制,SRTM原始DEM数据中存在着很多问题。本文以雪野水库区域为例,利用ASTER数据通过分析两种数据高程差异的分布特点对SRTM高程数据无效区域进行了填充,计算结果表明该方法可以提高无效数据处理结果的精度,是一种有效的获取相对完整地形数据的方法。
关键词(KeyWords)： 分布式水文模型;DEM;SRTM;ASTER;无效高程
基金项目(Foundation): 国家质量监督检验检疫总局科技公益专项:数字电视国家标准推广实施关键技术及优化标准研制(200910245)
作者(Author): 邓丽,范荣双,梁勇,张承明
DOI: 10.16251/j.cnki.1009-2307.2012.02.065
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