Study on the Extraction of Urban Water Systen and River Basin Based on Multiple-source DEM Fusion

Study on the Extraction of Urban Water Systen and River Basin Based on Multiple-source DEM Fusion

There is difference on extraction of urban water system and river basin because different data source of DEM has a different elevation error. In order to reduce the impact of single DEM error, this paper proposes an effective way to improve the DEM accuracy by fusing the multi-source DEM and reducin...

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Bibliographic Details
Main Authors: LIU Jiajia, ZHOU Zuhao, LIU Lin, LU Bin, DAI Dongchen, ZHU Jiasong, YAN Ziqi
Format: Article
Language:zho
Published: Editorial Office of Pearl River 2020-01-01
Series:Renmin Zhujiang
Subjects:
drainage extraction
watershed extraction
multi-source DEM fusion
Pingshan River
Online Access:http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.02.015
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Summary:There is difference on extraction of urban water system and river basin because different data source of DEM has a different elevation error. In order to reduce the impact of single DEM error, this paper proposes an effective way to improve the DEM accuracy by fusing the multi-source DEM and reducing the local error. The results demonstrate that the fusing DEM shows a greater accuracy in extracting the water system and river basin. Moreover, the application of Pingshan River reveals that it could get the best result by averaging the elevation of two different Source DEM with comprehensive consideration of accuracy errors of water system and river basin.
ISSN:1001-9235

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