Conventional and New Approaches for Combining Multi-Satellite Techniques

  • Rolf König
  • Chuang Shi
  • Karl Hans Neumayer
  • Shengyuan Zhu


The combination of different space geodetic or satellite techniques offers the possibility to determine more complete, reliable, and accurate reference frame parameters. Two new approaches are proposed: the onboard collocation and the integrated method. The onboard collocation utilizes the availability of different techniques onboard a Low Earth Orbiting (LEO) satellite. For the CHAMP and GRACE satellites, and for the GPS-35 and -36 satellites, the radial distances between the Global Positioning System (GPS) phase centers and the Satellite Laser Ranging (SLR) retroreflectors are examined. The integrated method treats a multi-satellite configuration with measurements by various tracking techniques on the observation level. From three months of observations from the GRACE/GPS constellation, a series of low degree harmonics of the Earth’s gravity field, representing dynamical geocenter location and axes orientation, is determined with high accuracy and daily resolution.

Key words

Reference Frames Space Geodetic Techniques Onboard Collocation Integrated Method 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Rolf König
    • 1
  • Chuang Shi
    • 2
  • Karl Hans Neumayer
    • 1
  • Shengyuan Zhu
    • 1
  1. 1.TelegrafenbergGeoForschungsZentrum PotsdamPotsdamGermany
  2. 2.GPS Research CenterWuhan UniversityWuhanP.R. China

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