Using Short Time-Scale Static PPP Results to Invert Ocean Tide Loading Displacement
Abstract 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.
Key words :
PPP
ocean tide loading
harmonic analysis
inversion
ocean tide model
Cite this article:
WEI Guoguang,WANG Qijie,PENG Wei et al. Using Short Time-Scale Static PPP Results to Invert Ocean Tide Loading Displacement[J]. jgg, 2019, 39(6): 607-612.
WEI Guoguang,WANG Qijie,PENG Wei et al. Using Short Time-Scale Static PPP Results to Invert Ocean Tide Loading Displacement[J]. jgg, 2019, 39(6): 607-612.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2019/V39/I6/607
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