Using viewshed analysis for river monitoring and management

Yi Jen Lee, Chih I. Fan, Hui Ju Ho, Li Yu Chang, Yao Cheng Kuo, Lung Cheng Chen, Hsi Hsin Hsu, Chien Hsin Liao, Chi Farn Chen

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Rivers are valuable and important water resources for human beings, but sustainable development and usage of the river has become a complex issue in modem times. River usage includes both legal (agricultural water, recreation and tourism), and illegal (quarrying, and dumping of waste into the river) activities all of which need to be monitored. However, the area is large, including the many tributaries draining into large river basins, which, in Taiwan are comprised of complex tectonic terrain. It costs money and time for river patrols to monitor these areas. The objective of this study is to develop a Viewshed analysis method based on the Geographic Information Systems (GIS) that can be used for locating optimized observation points to facilitate carrying out river patrols. Viewshed analysis can be utilized to define both the visible and invisible range from each observation point by combining digital terrain model (DTM) and road vector data. The method is designed to first locate several observation points about 2 km along the closest road near the river, after which Viewshed analysis is run. If there are some invisible areas left after the first Viewshed analysis, new observation points can be added and the Viewshed analysis run again. This process is iterated until the whole river area is visible. This study attempts to define the optimal observation points for river patrolmen in order to save time and resources.

原文???core.languages.en_GB???
主出版物標題32nd Asian Conference on Remote Sensing 2011, ACRS 2011
頁面2400-2404
頁數5
出版狀態已出版 - 2011
事件32nd Asian Conference on Remote Sensing 2011, ACRS 2011 - Tapei, Taiwan
持續時間: 3 10月 20117 10月 2011

出版系列

名字32nd Asian Conference on Remote Sensing 2011, ACRS 2011
4

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???event.eventtypes.event.conference???32nd Asian Conference on Remote Sensing 2011, ACRS 2011
國家/地區Taiwan
城市Tapei
期間3/10/117/10/11

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