摘要
水下地形测量精度主要采用主测线与检查线的水深比对较差进行评定,但在实际应用时,现有的评定方法不能够准确、快速地进行分析统计,往往耗费大量的人力与时间,也无法合理地表达水深测量的精度。为了能够充分利用检查线数据快速准确地对水深测点进行精度评定,全面合理判定测深点的质量,进而反映水下地形测量的精度,研究提出了一种新方法。该方法融合了GIS空间分析技术,将水下地形测量的主测线以及检查线的水深数据离散为空间点云矢量数据,开发数据处理与检测程序,快速地进行水深测量精度评定。该方法在长江荆州河段水下地形测量中得到应用,显著提高了参与精度评定的有效测点数以及评定效率,更加合理、准确地表达了水深测量数据的质量。
The accuracy of underwater topographic survey is mainly evaluated by the water depth difference between the main survey line and the inspection line.However,in practical application,the existing evaluation methods can not accurately and quickly analyze statistics,which often consumes a lot of manpower and time,and can not reasonably reflect the accuracy of water depth survey.In order to make full use of the inspection line data to evaluate the accuracy of the bathymetric point quickly and accurately,to judge the quality of the bathymetric point comprehensively and rationally,and to reflect the accuracy of underwater topographic survey,a new method is proposed.In this method,GIS spatial analysis technology is integrated,and the water depth data of the main survey line and the inspection line are discretized into spatial point cloud vector data.The data processing and detection program is developed to evaluate the accuracy of water depth survey quickly.This method has been applied to the underwater topographic survey in the Jingzhou section of Yangtze River,which significantly improves the number of effective measuring points and the evaluation efficiency,and more reasonably and accurately reflects the quality of the bathymetric survey data.
作者
杨松
孙慧敏
张振军
YANG Song;SUN Huimin;ZHANG Zhenjun(Hydrology and Water Resources Survey Bureau of Hanjiang River,Hydrology Bureau of Changjiang Water Resources Commission,Xiangyang 441021,China)
出处
《人民长江》
北大核心
2021年第7期115-119,共5页
Yangtze River
关键词
水深测量
检测线
点云
精度评定
长江荆州河段
bathymetry
detection line
point cloud
accuracy evaluation
Jingzhou reach of Changjiang River
