Physics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3206310g&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 6, CiteID L06310
Physics
14
Geodesy And Gravity: Reference Systems, Geodesy And Gravity: Space Geodetic Surveys, Geodesy And Gravity: Instruments And Techniques
Scientific paper
In this paper, we demonstrate that biases in the GPS satellite antenna phase center offsets could lead to scale biases in global network solutions, which change along with the observed satellite constellation. To validate the IGS standard offset values, satellite-specific offsets are estimated from GPS data and the network solutions are re-adjusted with these estimates. Both the estimated offsets and the re-adjusted network scales confirmed that the IGS standard offsets are significantly biased and produce scale changes of more than 1 ppb. From investigations of the offset inhomogeneities among satellites belonging to the same block type, it is strongly recommended that block-type-specific offsets used presently as IGS standard should be replaced by satellite-specific ones.
Dick Galina
Ge Maorong
Gendt G.
Reigber Ch.
Zhang Fei-Peng
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