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Absolute phase center corrections of satellite and receiver antennas

Impact on global GPS solutions and estimation of azimuthal phase center variations of the satellite antenna

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Abstract

Results of the estimation of azimuth-dependent phase center variations (PCVs) of GPS satellite antennas using global GPS data are presented. Significant variations of up to ±3–4 mm that are demonstrated show excellent repeatability over eight years. The application of the azimuthal PCVs besides the nadir-dependent ones will lead to a further reduction in systematic antenna effects. In addition, the paper focuses on the benefit of a possible transition from relative to absolute PCVs. Apart from systematic changes in the global station coordinates, one can expect the GPS results to be less dependent on the elevation cut-off angle. This, together with the significant reduction of tropospheric zenith delay biases between GPS and VLBI, stands for an important step toward more consistency between different space geodetic techniques.

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Correspondence to Ralf Schmid.

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Schmid, R., Rothacher, M., Thaller, D. et al. Absolute phase center corrections of satellite and receiver antennas. GPS Solut 9, 283–293 (2005). https://doi.org/10.1007/s10291-005-0134-x

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  • DOI: https://doi.org/10.1007/s10291-005-0134-x

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