基于无人船测深技术的淀浦河纵横断面测量

Longitudinal and Transverse Section Survey of Dianpu River Based onUnmanned Boat Bathymetric Technology

基于无人船测深技术,对上海市松江区淀浦河部分河段进行了水下地形纵横断面测量。断面测量利用测量型无人船获取水底高程,通过数据处理完成断面绘图。实验证明,无人船断面测量具有较高的效率与精度,主测线水深与检测线水深较差合格率达到98.2%,满足了行业规范要求;同时该项较差可满足偶然误差分布规律,表明无人船测量精度已得到有效控制,因此是一种高效率可靠的水下地形测绘方法。延迟误差是无人船测量的瓶颈,因此,施测前需采用适宜方法对此项误差进行有效改正。

Based on unmanned boat bathymetric technology,the underwater topographic longitudinal and transverse sections of Dianpu River in Songjiang District of Shanghai was surveyed.Section surveying was conducted by using an unmanned measurement boat to acquire underwater elevation and the section map was drawn through data processing.Experiments show that unmanned boat section measurement has high efficiency and accuracy.The qualified rate of water depth difference error between main survey line and checking line is 98.2%,which meets the requirements of industry standards.Meanwhile,the water depth difference error meets the distribution law of accidental errors,which shows that unmanned boat surveying accuracy has been effectively controlled.This concludes unmanned boat survey is an efficient and reliable underwater topographic survey method.Furthermore,delay error is the bottleneck of unmanned measurement boat,so it is necessary to adopt appropriate methods to correct this error effectively before measurement.