摘要
采用香港11个GPS测站的观测资料进行1h、2h、3h和4h静态PPP解算,获得4组PPP坐标序列,利用调和分析求取11个测站处8个主要分潮的负荷位移参数(振幅和相位),将其与海潮模型计算的负荷位移参数进行对比,并比较分析PPP反演值与海潮模型值改正海潮负荷信号的效果。结果表明,垂直和水平方向上,不同PPP结果反演8个分潮的负荷位移分别具有约5mm和7mm的差异;PPP反演8个分潮垂向负荷位移优于全球海潮模型,但水平方向上的反演效果稍弱。
In this paper,we first do 1 h,2 h,3 h and 4 h static PPP solutions by using short time-scale observation data from 11 GPS stations in Hong Kong,and then 4 sets of PPP coordinate sequences are obtained.Second,ocean tide loading (OTL) displacement parameters (amplitude and phase) of 8 main tidal constituents of 11 stations are obtained by harmonic analysis.Third,the misfits between PPP inversion value and ocean tide model value are analyzed.Finally,we compare the effect of correcting OTL signals by PPP inversion value and ocean tide model value.The results show that in vertical and horizontal directions,the OTL discrepancies of 8 tidal constituents inverted by static PPP with different sampling rates are about 5 mm and 7 mm,respectively;the vertical OTL of 8 tidal constituents by static PPP are better than global ocean tide model,but in horizontal direction the OTL signals inverted by static PPP are slightly weaker.
作者
魏国光
王琪洁
彭葳
郭良琦
WEI Guoguang;WANG Qijie;PENG Wei;GUO Liangqi(School of Geosciences and Info-Physics,Central South University,932 South-Lushan Road,Changsha 410083,China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring,Ministry of Education,Central South University,932 South-Lushan Road,Changsha 410083,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2019年第6期607-612,619,共7页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(U1531128)
中央高校基本科研业务费专项资金(2018zzts680)~~
关键词
PPP
海潮负荷
调和分析
反演
海潮模型
PPP
ocean tide loading
harmonic analysis
inversion
ocean tide model
