Journal of Space Technology and Applications (우주기술과 응용)

The Korean Space Science Society (한국우주과학회)
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Development of Operation System for Satellite Laser Ranging on Geochang Station

거창 인공위성 레이저 추적을 위한 운영 시스템 개발

  • Ki-Pyoung Sung (Korea Astronomy and Space Science Institute) ;
  • Hyung-Chul Lim (Korea Astronomy and Space Science Institute) ;
  • Man-Soo Choi (Korea Astronomy and Space Science Institute) ;
  • Sung-Yeol Yu (Korea Astronomy and Space Science Institute)
  • 성기평 (한국천문연구원) ;
  • 임형철 (한국천문연구원) ;
  • 최만수 (한국천문연구원) ;
  • 유성열 (한국천문연구원)
  • Received : 2024.04.12
  • Accepted : 2024.04.29
  • Published : 2024.05.31
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Abstract

Korea Astronomy and Space Science Institute (KASI) developed the Geochang satellite laser ranging (SLR) system for the scientific research on the space geodesy as well as for the national space missions including precise orbit determination and space surveillance. The operation system was developed based on the server-client communication structure, which controls the SLR subsystems, provides manual and automatic observation modes based on the observation algorithm, generates the range data between satellites and SLR stations, and carry out the post-processing to remove noises. In this study, we analyzed the requirements of operation system, and presented the development environments, the software structure and the observation algorithm, for the server-client communications. We also obtained laser ranging data for the ground target and the space geodetic satellite, and then analyzed the ranging precision between the Geochang SLR station and the International Laser Ranging Service (ILRS) network stations, in order to verify the operation system.

한국천문연구원은 인공위성 정밀 궤도 결정, 우주 감시, 우주 측지 등 과학 연구 및 국가적 우주 미션을 수행하기 위해 거창 SLR(satellite laser ranging) 시스템을 개발하였다. 시스템을 구성하는 여러 서브시스템 중 하나인 운영 시스템은 다른 서브시스템을 제어하고 관측 알고리즘을 기반으로 수동 및 자동 관측 모드를 제공하여, 지상에서 인공위성까지의 거리를 계산하는 소프트웨어로써 네트워크 기반의 서버와 클라이언트 방식으로 개발되었다. 본 연구에서는 운영 시스템의 요구사항을 분석하고, 서버 및 클라이언트 통신을 위한 개발환경, 소프트웨어 구조 및 관측 알고리즘을 기술한다. 그리고 개발된 운영 시스템을 이용하여 지상보정 및 측지 전용 인공위성 STARLETTE에 대한 레이저 추적을 통해 취득한 관측 데이터를 처리하여 ILRS(international laser ranging service) 국제기구에서 배포한 전 세계 SLR 관측소와 거리측정 정밀도를 비교 분석하였다.

Keywords

Acknowledgement

본 연구는 한국천문연구원 주요 사업 "우주물체 관측인프라 통합운영" 사업의 지원을 받았으며, 이에 감사드립니다.

References

  1. Sung KP, Choi EJ, Lim HC, Jung CG, Kim IY, et al., Development of operation software for high repetition rate satellite laser ranging, J. Korean Soc. Aeronaut. Space Sci. Res. 44, 1103-1111 (2016). https://doi.org/10.5139/JKSAS.2016.44.12.1103
  2. Urschl C, Gurtner W, Hugentobler U, Schaer S, Beutler G, Validation of GNSS orbits using SLR observations, Adv. Space Res. 36, 412-417 (2005). https://doi.org/10.1016/j.asr.2005.03.021
  3. Lim HC, Sung KP, Yu SY, Choi M, Park E, et al., Satellite laser ranging system at Geochang Station, J. Astron. Space Sci. 35, 253-261 (2018). https://doi.org/10.5140/JASS.2018.35.4.253
  4. Oh H, Park E, Lim HC, Lee SR, Choi JD, Orbit determination of high-earth-orbit satellites by satellite laser ranging, J. Astron. Space Sci. 34, 271-279 (2017). https://doi.org/10.5140/JASS.2017.34.4.271
  5. International Laser Ranging Service [ILRS], List of future missions (2024) [Internet], viewed 2024 May 01, available from: https://ilrs.cddis.eosdis.nasa.gov/missions/satellite_missions/future_missions/index.html
  6. Choi EJ, Bang SC, Sung KP, Lim HC, Jang CG, et al., Design and development of high-repetition rate satellite laser ranging system, J. Astron. Space Sci. 32, 209-219 (2015). https://doi.org/10.5140/JASS.2015.32.3.209
  7. Degnan JJ, Millimeter accuracy satellite laser ranging: a review, Contrib. Space Geodesy Geodyn. Res. 25, 133-162 (1993). https://doi.org/10.1029/GD025
  8. Wilkinson M, Schreiber U, Prochazka I, Moore C, Degnan JJ, et al., The next generation of satellite laser ranging systems, J. Geod. 93, 2227-2247 (2018). https://doi.org/10.1007/s00190-018-1196-1
  9. Riepl S, Muller H, Mahler S, Eckl J, Klugel T, et al., Operating two SLR systems at the Geodetic Observatory Wettzell: from local survey to space ties, J. Geod. 93, 2379-2387 (2019). https://doi.org/10.1007/s00190-019-01243-z
  10. Mcgarry JF, Hoffman ED, Degnan JJ, Cheek JW, Clarke CB, et al., NASA's satellite laser ranging systems for the twenty-first century, J. Geod. 93, 2249-2262 (2018). https://doi.org/10.1007/s00190-018-1191-6
  11. Ricklefs R, Consolidated laser prediction and data formats: supporting new technology, Proceedings of the International Workshop on Laser Ranging Conference, Austin, TX, 15-20 Oct 2006.
  12. Lim H, Choi M, Park E, Yu S, Seong K, et al., The new Korean SLR system and its automatic operation, Proceedings of the International Workshop on Laser Ranging Technical Workshop, Riga, Latvia, 2-5 Oct 2017.
  13. Choi MS, Lim HC, Choi EJ, Park ES, Yu SY, et al., Performance analysis of the first Korean satellite laser ranging system, J. Astron. Space Sci. 31 225-233 (2014). https://doi.org/10.5140/JASS.2014.31.3.225