DEM不确定性影响评价中的填洼分析

被引:5
作者
王培法
都金康
冯学智
机构
[1] 南京大学地理信息科学系
关键词
DEM不确定性; 填洼; 蒙特卡罗模拟; 皎口流域;
D O I
暂无
中图分类号
P208 [测绘数据库与信息系统];
学科分类号
070503 ; 081603 ; 0818 ; 081802 ;
摘要
洼地广泛存在于DEM实现中,洼地的处理会影响DEM不确定性评价结果。该文利用蒙特卡罗方法模拟DEM不确定性,用偏差指标评价DEM不确定性对坡度和地形指数的影响,将填洼与不填洼情况下的偏差指标相减来量化填洼对DEM不确定性评价的影响。研究发现,洼地对不同参数DEM不确定性影响评价作用不同,随着DEM不确定性的增大,洼地的影响也增大。
引用
收藏
页码:24 / 26
页数:3
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