实时PPP离岸潮位遥测方法与试验  

Real-time PPP offshore tide telemetry methods and experiments

作　　者：刘亮[1,2] LIU Liang(Tianjin Research Institute for Water TransportEngineering,Tianjin 300456,China;Tianjin Key Laboratory of Surveying and Mapping for Water Transport Engineering,Tianjin Survey and Design Institute for Water Transport Engineering Co.,Ltd.,Tianjin 300456,China)

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456 [2]天津水运工程勘察设计院有限公司天津市水运工程测绘技术企业重点实验室,天津300456

出　　处：《海洋测绘》2024年第2期18-21,共4页Hydrographic Surveying and Charting

基　　金：中央级公益性科研院所基本科研业务费(TKS20230202);天津市科技计划项目(23YDPYCG00010);天津市交通运输科技项目(2024-B07);企业科研创新基金(SJY202101)。

摘　　要：为降低离岸潮位实时遥测成本,提高适用性,提出了基于实时精密单点定位的离岸潮位数据获取与提取方法,利用小型浮标搭载具有实时PPP和远程通讯功能的GNSS接收机进行离岸潮位遥测,原始观测数据经粗差剔除、均值化处理、S-G滤波后,较好地剔除了风、浪、流等引起浮标姿态变化所带来的测量误差。研发了相应软硬件,并在天津港外海进行了试验,测试结果优于±8cm,整体中误差为±3.7cm,满足海洋观测规范要求。相较基于压力式传感器加声学通信的现行数据采集方式,该方法具有建设成本较低、观测方式简单、后期维护方便、产业化前景好等特点,可进一步在实际项目中推广使用。To reduce the cost and improve the applicability of real-time offshore tide telemetry,this paper proposes an offshore tide data acquisition and extraction method based on real-time precise point positioning(RTPPP).A GNSS receiver equipped with real-time PPP and telecommunication functions was used for offshore tide telemetry using a small buoy.After gross error removal,averaging and S-G filtering,the measurement errors caused by changes in buoy attitude caused by wind,waves and currents were well eliminated.The corresponding software and hardware are developed and tested in the sea off Tianjin port.The test results are better than±8 cm,and the overall median error is±3.7 cm,which meets the requirements of Marine observation specifications.Compared with the current data acquisition method based on pressure sensor and acoustic communication,the proposed method has the characteristics with lower construction cost,simple observation mode,convenient maintenance in later period,and good industrialization prospect therefore it can be further promoted in practical projects.

关 键 词：海洋测绘 潮位遥测 实时精密单点定位 实时数据流 S-C滤波 

分 类 号：P229.7[天文地球—大地测量学与测量工程]