Abstract Using ocean tide loading(OTL) corrections computed in the center of mass of the whole earth system(CM) frame and in the center of mass of the solid earth(CE) frame, we compute PPP position time series of 132 global stations to investigate the effect of geocenter motion induced by OTL on periodic signals of GPS position time series. The result shows that: 1) The average position differences induced by OTL geocenter motion are 0.7 mm and 1.3 mm for the horizontal and vertical components, respectively, and the effect of OTL-induced geocenter motion on GPS position time series is very similar for adjacent stations. 2) In CM-OTL and CE-OTL, the periodic signal caused by the tidal load effect is significantly reduced, and the inconsistency between the frame to which the tidal load correction belongs and the frame to which the GPS track belongs will introduce the GPS nodal year signal, 14 d and 9 d signals. 3) When performing PPP using precise satellite products provided by IGS, the OTL in the CE frame should be employed.
GUO Shiwei,SHI Chuang,WEI Na et al. Effect of Geocenter Motion Induced by Ocean Tide Loading on Periodic Signals of GPS Position Time Series[J]. jgg, 2022, 42(8): 790-795.
GUO Shiwei,SHI Chuang,WEI Na et al. Effect of Geocenter Motion Induced by Ocean Tide Loading on Periodic Signals of GPS Position Time Series[J]. jgg, 2022, 42(8): 790-795.