摘要
在分析传统潮位测量和RTK潮位测量缺陷的基础上,基于PPK技术开展海洋倾倒区潮位测量方法研究。系统介绍了PPK技术原理及PPK潮位测量体系,对数据进行后处理,利用姿态参数修正天线高,采用小波分析、拟合平滑的方法滤除波浪,提取大地高潮位信息,并基于EGM2008重力场模型结合水准控制点进行基准转换,得到85基准下的PPK潮位数据。试验结果表明,PPK潮位精度与验潮站潮位基本一致,可靠性高,能够广泛应用于海洋倾倒区潮位测量中。
On the basis of analyzing the defects of traditional tide level measurement and RTK tide level measurement,the method of tide level measurement in ocean dumping site is studied based on PPK technology.The principle of PPK technology and the tidal level measurement system of PPK are introduced systematically.The data are postprocessed,the antenna height is modified by attitude parameters,the waves are filtered by wavelet analysis and fitting and smoothing method,and the geodetic high water level information is extracted.Based on the EGM2008 gravity field model and the leveling control point,the datum conversion is carried out to obtain the tidal level data of PPK 85.The test results show that the precision of PPK tide level is basically consistent with the tide level of tide gauge station,and the reliability is high,which can be widely used in the tide level measurement of ocean dumping site.
作者
魏树运
张云
杨正先
张振冬
韩建波
Wei Shuyun;Zhang Yun;Yang Zhengxian;Zhang Zhendong;Han Jianbo(National Marine Enviromental Monitoring Center,Dalian 116023,China;Dalian University of Technology City College,Dalian 116600,China)
出处
《工程勘察》
2024年第8期44-47,65,共5页
Geotechnical Investigation & Surveying
基金
国家重点研发计划“全球变化及应对”专项资助项目(2017YFA0604902).
关键词
PPK潮位测量
数据后处理
姿态改正
波浪滤除
基准转换
PPK tidal level measurement
data-aftertreatment
attitude correction
wave filtering
datum transformation
