Reduced-Dynamic Precise Orbit Determination Based on Helmert Transformation

  • J. Chen
  • J. Wang
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 132)


Four fundamental approaches in the Precise Satellite Orbit Determination (POD) are Dynamic POD, Reduced-Dynamic POD, Kinematic POD, and Reduced-Kinematic POD (Svehla & Rothacher, 2003, Liu et al. 2004). Generally, two kinds of information are considered: dynamic parameters and kinematic factors. In the dynamic method, the orbit precision mainly depends on the initial orbits and the dynamic models. Using the dynamic models recommended by IERS, the 12-hour extrapolated orbits reach a precision of several centimeters. Therefore the main task for dynamic POD is to get the precise initial orbits. On the other hand, in the kinematic method, the main problem is how to reduce influence of weak geometry and phase breaks.

We suggest a reduced-dynamic POD model based on the Helmert transformation. The model connects the dynamic integrated orbits and the precise kinematic orbits. Using GPS data, we get the results that the orbit-precision of none-corrected orbits is at the level of decimeter, while the corrected orbit-precision using the proposed model is several millimeters.


Dynamic orbit kinematic orbit precise orbit determination helmert transformation 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. McCarthy, D.D. and Gérard Petit (eds.): IERS conventions (2003), IERS Technical Note, 32, 2004.Google Scholar
  2. Drazen Svehla & Markus Rothacher. Kinematic, Reduced-Kinematic, dynamic and reduced-dynamic precise orbit determination in the LEO orbit, Second CHAMP Science Meeting, GeoForschungsZentrum Potsdam, September 1–4, 2003.Google Scholar
  3. Jiexian WANG. Precise Positioning and Orbiting for GPS. Press of Tongji University. 1997.Google Scholar
  4. Junping CHEN. The Models of Solar Radiation Pressure in GPS Precise Orbit Determination, ACTA ASTRONOMICA SINICA, 2006.Google Scholar
  5. Guoxiong JIN, Dajie LIU, Yiming SHI. The Application of GPS and GPS Data Processing. Press of Tongji University. 1994.Google Scholar
  6. Jinnan LIU, Qile ZHAO, Xiaohong ZHANG. Geometric Orbit Determination of CHAMP Satellite and Dynamic Models’ Compensation During Orbit Smoothing. Journal of Wuhan University, 2004, 29, 1–6.CrossRefGoogle Scholar
  7. T.A. Springer, G. Beutler, M. Rothacher. A new solar Radiation Pressure Model for the GPS Satellites, CODE papers, GPS Solution, 1998.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • J. Chen
    • 1
    • 2
  • J. Wang
    • 1
  1. 1.Department of Surveying and Geo-informaticsTongji UniversityP.R. China
  2. 2.GeoForschungsZentrum PotsdamGermany

Personalised recommendations