Journal of Astronomy and Space Sciences

  • 제36권3호
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  • Pages.187-197
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  • 2019
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  • 2093-5587(pISSN)
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  • 2093-1409(eISSN)
한국우주과학회 (The Korean Space Science Society)
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Angles-Only Initial Orbit Determination of Low Earth Orbit (LEO) Satellites Using Real Observational Data

  • Hwang, Hyewon (Astrodynamics and Control Lab., Department of Astronomy, Yonsei University) ;
  • Park, Sang-Young (Astrodynamics and Control Lab., Department of Astronomy, Yonsei University) ;
  • Lee, Eunji (Astrodynamics and Control Lab., Department of Astronomy, Yonsei University)
  • 투고 : 2019.07.08
  • 심사 : 2019.08.28
  • 발행 : 2019.09.15
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초록

The Optical Wide-field patroL-Network (OWL-Net) is a Korean optical space surveillance system used to track and monitor objects in space. In this study, the characteristics of four Initial Orbit Determination (IOD) methods were analyzed using artificial observational data from Low Earth Orbit satellites, and an appropriate IOD method was selected for use as the initial value of Precise Orbit Determination using OWL-Net data. Various simulations were performed according to the properties of observational data, such as noise level and observational time interval, to confirm the characteristics of the IOD methods. The IOD results produced via the OWL-Net observational data were then compared with Two Line Elements data to verify the accuracy of each IOD method. This paper, thus, suggests the best method for IOD, according to the properties of angles-only data, for use even when the ephemeris of a satellite is unknown.

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참고문헌

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