摘要
为探索滨水地区地形地貌特征,促进其经济发展,以西沪港为研究对象,采用DGPS-测深仪协同探测技术、机载激光雷达技术等多源监测技术测量其水下地形。结果表明,DGPS-测深仪协同探测技术深水区域测量中误差分别为±0.18 m(H≤20 m)和±0.0092H(H>20 m),主检测线重合点深度测量互差超限率小于1.9%(H≤20 m),互差超限率小于3.3%(H>20 m),机载激光雷达技术能够实现盐沼与滩涂等浅水区域地形图测绘。研究成果为获取复杂环境下水下地形提供了技术思路。
In order to explore the landform features of the waterfront area and promote its economic development.In this paper,the Xihugang is taken as the research object,and multi-source monitoring technologies such as DGPS-sounder cooperative detection technique,Light Detection And Ranging(LiDAR)are used to survey its underwater topography.The results show that the median error of DGPS-sounder cooperative detection technique in the deep water areais respectively±0.18 m(H≤20 m)and 0.0092H(H>20 m).In addition,the difference overrun rate of the coincident point of the main detection line is less than 1.9%(H≤20 m)in the water depth measurement,and the difference overrun rate is less than 3.3%(H>20 m).LiDAR can survey the topographic map of the shallow water areas such as salt marshes and beaches.The research results provide technical ideas for obtaining underwater terrain in complex environment.
作者
孙伟
SUN Wei(Ningbo Institute of Oeanography,Ningbo 250101,China)
出处
《城市勘测》
2022年第4期139-144,共6页
Urban Geotechnical Investigation & Surveying
关键词
水下地形测量
复杂环境
多源监测
西沪港
underwater topographic survey
complex environment
multi-source monitoring technology
Xihugang
