GPS Solutions

, Volume 9, Issue 4, pp 283–293

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
  • Ralf Schmid
  • Markus Rothacher
  • Daniela Thaller
  • Peter Steigenberger
Original Article

DOI: 10.1007/s10291-005-0134-x

Cite this article as:
Schmid, R., Rothacher, M., Thaller, D. et al. GPS Solut (2005) 9: 283. doi:10.1007/s10291-005-0134-x

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.

Keywords

Satellite antenna Phase center variations Tropospheric zenith delay Elevation cut-off 

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Ralf Schmid
    • 1
  • Markus Rothacher
    • 2
  • Daniela Thaller
    • 2
  • Peter Steigenberger
    • 2
  1. 1.Institut für Astronomische und Physikalische GeodäsieTechnische Universität MünchenMunichGermany
  2. 2.Forschungseinrichtung SatellitengeodäsieTechnische Universität MünchenMunichGermany