摘要
河(江)道地形测量是保证河(江)道通航、行洪与河(江)道整治、河(江)道工程施工等的前提。针对现有河(江)道地形测量技术中存有作业效率低、作业人员存有涉水风险等问题,以四川省广元市昭化区嘉陵江某段长约2.6 km的江道为研究区域,运用无人机和无人船相结合的江道测绘技术,得到了符合规范要求的试验区数字正射影像(DOM)、数字高程模型(DEM)和数字线划图(DLG)。结果表明:在GPS-RTK检验方式下,基于无人机和无人船相结合的测绘技术生产的1:2 000 DLG成果就岸上地形检查点而言中误差小于0.055 m占比99.4%,就水下地形检查点而言中误差小于0.25 m占比98.4%,均能满足JTS 131—2012《水运工程测量规范》成图精度要求。
The topographic survey of river channels is a prerequisite for river channel navigation, flood discharge and river channel regulation, and river channel engineering construction. The existing topographic survey technologies for river channels have low operation efficiency, and operators usually face risks for wading. In view of these problems, this paper studies a section of the Jialing River in Zhaohua District, Guangyuan City, Sichuan Province, which has a length of about 2.6 km, and uses a river channel mapping technology that combines unmanned aerial vehicles(UAVs) and unmanned ships to obtain a digital orthophoto image(DOM),digital elevation model(DEM),and digital line graphic(DLG) of the test area, which all meet specifications. The results show that under the GPS-RTK inspection mode, the proportion of errors less than 0.055 m in the 1:2 000 DLG results produced by the mapping technology based on UAVs and unmanned ships accounts for 99.4% in terms of onshore topography checkpoints, and that of errors less than 0.25 m accounts for 98.4% in terms of underwater topography checkpoints, which both meet the mapping accuracy requirements of JTS 131—2012 Specifications for Port and Waterway Engineering Survey.
作者
刘超群
卢自来
刘敏
朱运权
廖小龙
李贞
LIU Chao-qun;LU Zi-lai;LIU Min;ZHU Yun-quan;LIAO Xiao-long;LI Zhen(Sichuan Communication Surveying&Design Institute Co.,Ltd.,Chengdu 610017,China;Faculty of Architecture and City Planning,Kunming University of Science and Technology,Kunming 650550,China;Changsha Hai Tu Technology Co.,Ltd.,Changsha 410000,China;College of Information Engineering,Chengdu College of Arts and Science,Chengdu 610401,China)
出处
《水运工程》
北大核心
2023年第S01期138-142,共5页
Port & Waterway Engineering
基金
国家自然科学基金项目(52268014)
四川省交通勘察设计研究院有限公司科技项目(232022015)。
关键词
无人机
无人船
河(江)道地形测绘
3D产品
精度评价
UAV(unmanned aerial vehicle)
unmanned ship
river channel topography mapping
3D product
accuracy evaluation
