Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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Implementation and Validation of Earth Acquisition Algorithm for Communication, Ocean and Meteorological Satellite

  • Park, Sang-Wook (Ground Systems Division, Satrec Initiative) ;
  • Lee, Young-Ran (Ground Systems Division, Satrec Initiative) ;
  • Lee, Byoung-Sun (Satellite System Research Team, Electronics and Telecommunications Research Institute) ;
  • Hwang, Yoo-La (Satellite System Research Team, Electronics and Telecommunications Research Institute) ;
  • Lee, Un-Seob (Ground Systems Division, Satrec Initiative)
  • Received : 2011.11.15
  • Accepted : 2011.11.25
  • Published : 2011.12.15
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Abstract

Earth acquisition is to solve when earth can be visible from satellite after Sun acquisition during launch and early operation period or on-station satellite anomaly. In this paper, the algorithm and test result of the Communication, Ocean and Meteorological Satellite (COMS) Earth acquisition are presented in case of on-station satellite anomaly status. The algorithms for the calculation of Earth-pointing attitude control parameters including those attitude direction vector, rotation matrix, and maneuver time and duration are based on COMS configuration (Eurostar 3000 bus). The coordinate system uses the reference initial frame. The constraint calculating available time-slot to perform the earth acquisition considers eclipse, angular separation, solar local time, and infra-red earth sensor blinding conditions. The results of Electronics and Telecommunications Research Institute (ETRI) are compared with that of the Astrium software to validate the implemented ETRI software.

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References

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