摘要
为突破传统水文站点观测法在湖泊库容监测中覆盖有限、效率低下、精度不足、设备成本高昂的瓶颈,本研究提出一种连续运行参考站(CORS)融合测深技术测量湖泊蓄水量的方法。研究以某湖为示范区,结合全球导航卫星系统(GNSS)实时厘米级定位与高密度水下地形测绘技术,通过固定轴连接设计,实现GNSS接收机与回声测深仪同步运动,成功消除波浪扰动导致的垂直误差。主要技术包括:①采用GNSS天线-测深仪刚性固定装置,建立动态补偿机制,确保湖底高程解算精度;②针对水草干扰实施密集采样与测深杆校核双策略;③通过21341个测深点构建三维湖底数字地面模型(DTM)模型,采用断面法计算库容。实验结果显示:研究区某湖实际容积162.7万m^(3),最大蓄水量233.0万m^(3),最大水深4.98 m。该技术实现了“水面-水下”一体化精准监测,有效解决传统手段定位偏差、效率低下、费用高的问题,为自然资源调查提供可推广的技术路径。
To overcome the limitations of traditional hydrological station observation methods in lake reservoir capacity moni⁃toring,including limited coverage,low efficiency,insufficient accuracy,and high equipment costs,this study proposed a method for measuring a lake’s water storage using a continuously operating reference station(CORS)fusion bathymetry technology.The study used a specific lake as a demonstration area,combining global navigation satellite system(GNSS)real-time centimeter-level positioning with high-density underwater topographic mapping technology.Through a fixed-axis connection design,the GNSS receiver and echo sounder were synchronized in motion,successfully eliminating vertical errors caused by wave disturbances.The main technical components included:①using a rigidly fixed device connecting the GNSS antenna and echo sounder to establish a dynamic compensation mechanism,ensuring the accuracy of lake bottom elevation calculations.②implementing a dual strategy of dense sampling and echo sounder rod verification to address aquatic plant interference.③constructing a three-dimensional lake bottom digital terrain model(DTM)using 21341 echo sounder points and calculating reservoir capacity using the cross-section method.Experimental results show that the actual volume of a certain lake in the study area is 1.627 million m^(3),with a maximum water storage capacity of 2.33 million m^(3) and a maximum water depth of 4.98 meters.This technology achieves integrated precise monitoring of both the water surface and underwater environments,effectively addressing issues such as positioning errors,low efficiency,and high costs associated with traditional methods,thereby providing a scalable technical approach for natural resource surveys.
作者
李雷
王水清
LI Lei;WANG Shuiqing(Shandong Province Weihai City Planning Technical Service Center Company Limited,Weihai,Shandong 264200,China;Shandong Province Weihai City Housing Security Public Service Center,Weihai,Shandong 264200,China)
出处
《北京测绘》
2025年第9期1325-1330,共6页
Beijing Surveying and Mapping
关键词
湖泊蓄水量监测
连续运行参考站(CORS)融合测深技术
高精度水下地形测绘
三维库容建模
动态误差补偿
lake’s water storage monitoring
continuously operating reference station(CORS)fusion bathymetry
highprecision underwater topographic mapping
three-dimensional reservoir modeling
dynamic error compensation
