有色金属科学与工程2024，Vol.15Issue(3)：432-439,8.DOI:10.13264/j.cnki.ysjskx.2024.03.013
多源参考数据下的边坡DEM提取与精度分析
Slope DEM extraction and accuracy analysis based on multi-source reference data
摘要
Abstract
Reference DEM is indispensable and important data in the accuracy analysis of InSAR DEM extraction.Considering the abundance of available DEM data,how to choose reliable reference DEMs to meet the accuracy requirements of DEM extraction for different terrains is an urgent problem in DEM extraction.In this article,ALOS DEM of 12.5 m,STRM DEM of 30 m,and STRM DEM of 90 m were selected as reference DEMs.Based on two Sentinel-1A images from 2020,DEM data on slopes in some areas of Dexing City was extracted.InSAR technology was used to extract S1A DEM data from the experimental area,and ASTGTM DEM data as a reference.About 300 detection points were randomly selected using the detection point method,the corresponding evaluation indicators were selected,and accuracy checks on S1A DEMs extracted from different reference DEMs were performed.The research results show that the extracted S1A DEM has a higher accuracy when ALOS DEM with a resolution of 12.5 m is used as the external DEM,with its RMSE in experimental area A of 9.412 m.The extracted S1A DEM has a relatively lower accuracy when ALOS DEM with a resolution of 90 m is used as the external DEM,with its RMSE in experimental area A of 10.293 m.This experiment guides extracting DEM from different terrains and can help scholars better choose reference DEM when conducting InSAR experiments.The research results can provide important technical support for slope disasters and early warning.关键词
多源参考数据/InSAR技术/DEM提取/精度分析Key words
multiple source reference data/InSAR technology/DEM extraction/precision analysis分类
矿业与冶金引用本文复制引用
陈淑婷,夏益强,陈兰兰,肖海平..多源参考数据下的边坡DEM提取与精度分析[J].有色金属科学与工程,2024,15(3):432-439,8.基金项目
国家自然科学基金资助项目(42361012) （42361012）
江西省自然科学基金项目(20212BAB204030) （20212BAB204030）
江西省教育厅科技项目(GJJ2203602) （GJJ2203602）
