摘要
采用常规的RTK定位技术结合单频测深对杭州湾跨海大桥进行河势断面监测时,常因丢失RTK差分信号链接而导致定位精度严重下降,无法满足RTK三维水深测量要求。介绍载波相位差分的工作原理、工作流程并分析PPK的定位精度,研究PPK技术在杭州湾跨海大桥河势断面观测中的应用。结果表明,该方法能较好地解决由于差分信号链接丢失而导致的定位精度严重下降问题。
The traditional technique using RTK and single beam echosounder for the profile survey of the Hangzhou Bay Bridge is subjected to significant decline in positioning accuracy due to the loss of RTK differential signal.This paper discusses the application of underwater profile survey in Hangzhou Bay Bridge based on PPK without tidal observation.First it introduces the principle of GNSS carrier phase differential,then presents the workflow of PPK.Finally,it analyses the precision of PPK positioning.The result shows that this method can solve the problem of RTK differential signal loss which makes the positioning precision decline.
作者
夏晓亮
龚令平
魏荣灏
郁蕾
徐达
陈佳兵
XIA Xiaoliang;GONG Lingping;WEI Ronghao;YU Lei;XU Da;CHEN Jiabing(Ningbo Hangzhou Bay Bridge Development Co.,Ltd.,Ningbo 315336,Zhejiang,China;Zhejiang Institute of Hydraulics&Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310017,Zhejiang,China;Zhejiang Provincial Key Laboratory of Estuary and Coast,Hangzhou 310017,Zhejiang,China)
出处
《浙江水利科技》
2022年第6期24-26,31,共4页
Zhejiang Hydrotechnics
基金
浙江省水利科技计划项目(RC1902,RC2006)。
关键词
PPK
杭州湾跨海大桥
GNSS
强潮河口
无验潮观测
PPK
Hangzhou Bay Bridge
GNSS
strong tidal estuary
observation without tidal observation
