基于GNSS三维水道观测技术的水深测量  

Bathymetric measurement based on GNSS 3D waterway observation technology

作　　者：魏猛 黎鹏 崔志芳 张晓萌 张凌源 WEI Meng;LI Peng;CUI Zhifang;ZHANG Xiaomeng;ZHANG Lingyuan(Middle Changjiang River Bureau of Hydrology and Water Resources Survey,Bureau of Hydrology of Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会水文局长江中游水文水资源勘测局,湖北武汉430010

出　　处：《水利水电快报》2025年第1期30-35,共6页Express Water Resources & Hydropower Information

基　　金：国家重点研发计划项目(2023YFC3209502)。

摘　　要：为了探究GNSS三维水道观测技术在长江中游及汉江中下游水深测量精度问题,基于国内外目前水深测量研究现状,阐述了传统验潮模式与GNSS三维水道观测模式两种水深测量基本原理,通过Hypack软件获取GNSS动态测高数据,对试验区内两种模式下水深测量数据的精度进行了详细分析。结果表明:测区内分段高程转换模型精度与GNSS定位精度均为良好。GNSS三维水道观测数据与验潮数据相比,水位互差小于0.1 m的测点占比大于95%,满足相关行业规范要求,证明GNSS三维水道观测技术在长江中游及汉江中下游河段具备一定可靠性和精确性,可进一步推广应用。In order to investigate the accuracy of GNSS 3D waterway observation technology in the middle reaches of Yangtze River and the middle and lower reaches of Han River,we based on the current research status of bathymetry at home and abroad,described the basic principles of bathymetry measurement of the traditional tide gauge mode and the GNSS 3D waterway observation mode,obtained the dynamic altimetry data of the GNSS through the Hypack software,and made a detailed analysis of the accuracy of bathymetric data of the two modes in the test area.The results showed that the accuracy of segmental elevation conversion model and the GNSS positioning in the test area were relatively good.Compared with the tide gauge data,the percentage of measurement points with water level difference less than 0.1 m in GNSS 3D waterway observation data was larger than 95%,which met the requirements of relevant industry specifications.It proved that the GNSS 3D waterway observation technology had a certain reliability and accuracy in the middle reaches of Yangtze River and the middle and lower reaches of Han River and can be further popularized and applied.

关 键 词：GNSS三维水道观测 验潮水位 水深测量 长江中游 汉江中下游 

分 类 号：P332.3[天文地球—水文科学]