Abstract There is currently little analysis of the effect characteristics of ocean tide loading worldwide in PPP, so we compare the solutions of static and kinematic PPP for 20 IGS stations before and after ocean tide model corrections of FES2004 and GOT4.7, and discuss the difference of tide waves under the two models. The test results show that the displacement in the up direction of coastal stations worldwide caused by ocean tide loading can reach 5 cm, but it does not simply increase, as sites are closer to the coastline in intercontinental and inland seas such as the Mediterranean and the Baltic Sea. Ocean tide loading effects on the coordinate error RMS in 24 h static PPP worldwide can reach several millimeters and the upgrade rate of convergence time can reach 30% after correction, but for some islands and land-sea junction zones, the correction effect of east and north directions is poor. The difference of M2 constituents in the up direction worldwide based on the two models can reach a maximum of 13 mm in offshore areas, and it is not necessarily related to ocean tide itself in terms of geographical distribution; the difference of ocean tide loading deformation has a periodic characteristic similar to ocean tide, which can reach several millimeters near the Malay Archipelago, and difference in half-diurnal tide is higher than that of diurnal tide and half-moon tide.
HE Jinxin,ZHANG Zhetao,HE Xiufeng. Characteristics and Differences Analysis of the Effect of FES2004 and GOT4.7 Ocean Tide Model Corrections on Worldwide PPP[J]. jgg, 2021, 41(6): 612-617.
HE Jinxin,ZHANG Zhetao,HE Xiufeng. Characteristics and Differences Analysis of the Effect of FES2004 and GOT4.7 Ocean Tide Model Corrections on Worldwide PPP[J]. jgg, 2021, 41(6): 612-617.
