Precise orbit determination of satellite using a batch filter based on the unscented transformation

Eun Seo Park, Sang Young Park, Kyoung Min Ron, Kyu Hong Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In this paper, an alternative batch filter has been presented and utilized for precise satellite orbit determination. The alternative batch filter is developed without any linearization and approximation process using the Unscented Transformation. For the precise orbit determination system, the position, velocity and a parameter for ballistic coefficient of the low earth orbiting satellite at epoch time are considered as states to be estimate. The range, azimuth, and elevation angles of satellite measured from three ground tracking stations are used for observation. For evaluation and verification of the presented batch filter performance. The results are compared with those of a batch least squares filter for various initial errors in position, velocity, and measurement sampling periods. For relatively small initial errors in position and velocity or short measurement sampling periods, the accuracy of orbit determination is similar in both the filters. Under large initial errors in position and velocity or long measurement sampling periods, the alternative batch filter yields more robust and stable convergence than the batch least squares filter. Furthermore, the alternative batch filter can be easily utilized because it does not require calculations of partial derivatives. The alternative batch filter based on the Unscented Transformation is effectively applicable for highly nonlinear batch estimation problems.

Original languageEnglish
Title of host publicationAstrodynamics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Astrodynamics Specialist Conference
Number of pages18
Publication statusPublished - 2008

Publication series

NameAdvances in the Astronautical Sciences
Volume129 PART 2
ISSN (Print)0065-3438

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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