摘要
无人测量技术作为当前水下地形测量智能化、自动化的发展方向,受到业内的广泛关注。本文基于无人测量技术对沿江高速常州段至太仓段高架桥梁横跨的大型河流上下游1000 m范围内河道横断面进行测量,最终形成河道横断面图。人工检测证明,检测线与主测深线深度互差值合格率为96.21%,满足无人船水深测量规范的要求。进一步利用数理统计的方法对深度互差值进行比较分析,发现深度互差值基本集中在[-0.40.4]的范围内,超过0.8的范围数量为0,证明无人船测量水深值的精度有效可靠。结论发现,无人船技术不但能够提供高精度的河道断面成果,而且能够提升效率、降低成本,对推动水下地形测量科技进步具有重要的实践意义。
As a development direction of intelligent and automated underwater topographic survey,unmanned survey technology has received extensive attention in the industry.Based on the unmanned survey technology,this paper surveys the riverway cross section within 1000 m of the upstream and downstream of the large river crossed by the viaduct from Changzhou to Taicang section of the riverside expressway,and finally a cross-sectional structure of the riverway is obtained.According to manual inspection,the acceptability rate of depth mutual difference between the inspection line and the main bathymetric line is 96.21%,which meets the requirements of the unmanned ship's water depth measurement.Further,mathematical statistics are used to compare and analyze the depth mutual difference,and it is found that the depth mutual difference are basically concentrated in the range[-0.40.4],and the number of ranges exceeding 0.8 is 0,which proves that the precision of bathymetry by unmanned ship is effective and reliable.The conclusion is that unmanned ship technology can not only provide high-precision riverway section results,but also increase efficiency and reduce costs,and has important practical significance for promoting the advancement of underwater topographic survey technology.
作者
江勇
陈丽娜
陈梁
朱明
韩成
JIANG Yong;CHEN Lina;CHEN Liang;ZHU Ming;HAN Cheng(Jiangsu Institute of Geological Surveying and Mapping,Nanjing 211111,China;Basic Teching Department,Wanjiang Institute of Technology,Ma′anshan 243031,China;Guangzhou South Surveying and Mapping Technology Co.,Ltd.,Nanjing Branch,Nanjing 210003,China)
出处
《测绘与空间地理信息》
2023年第5期209-212,共4页
Geomatics & Spatial Information Technology
关键词
无人船
横断面
水深测量
深度互差值
unmanned ship
cross section
bathymetry
depth mutual difference
