Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on Coordinated Attitude Flying for Sequential Spacecraft Tracking

목표비행체 연속 추적을 위한 자세틀 유지비행에 관한 연구

  • 박영웅 (한국항공우주연구원 통해기체계팀) ;
  • 방효충 (한국과학기술원 기계공학과 항공우주)
  • Published : 2009.01.01
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Abstract

This paper derives the equation of coordinated attitude formulation taking into account the orbital dynamics of a target vehicle and the attitude of a tracking satellite in geostationary orbit. The coordinated attitude is always to communicate with the ground station during the target tracking. Because the tracking satellite could perform high angle maneuver, MRP parameters having no singular point are used. Also for the sequential tracking of several target vehicles, the equation automatically making a coordinated attitude is suggested. Coordinated attitude flying and sequential tracking are confirmed through simulations. In short, this paper shows that a satellite could track a target vehicle and communicate with ground station simultaneously using the derived equation of coordinated attitude even though without a accuracy sensor.

본 논문에서는 목표비행체의 궤도운동 특성과 정지궤도에 있는 추적위성의 자세운동 특성을 결합하여 목표비행체를 추적하는 것과 동시에 지상국과 항상 교신할 수 있는 자세틀을 형성할 수 있는 관계식을 유도하였다. 형성되는 자세틀을 유지하기 위해서 추적위성이 고기동 자세변환을 수행할 수 있으므로 고기동에서도 특이점을 갖지 않는 MRP 변수를 사용하였다. 또한, 여러 목표비행체에 대해 연속 추적이 가능하도록 자동으로 자세틀을 변환할 수 있는 관계식을 제시하고 시뮬레이션을 통해 자세틀 유지비행과 연속 추적 성능을 확인하였다. 본 논문에서 제시한 자세틀 유지비행은 고정밀 센서를 이용하지 않아도 지상장비를 통해 목표비행체 궤도만 제공되면 추적위성이 항상 지상과 교신하면서 목표비행체를 추적할 수 있음을 보였다.

Keywords

References

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