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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
권호 표지
DOI QR코드

DOI QR Code

Development of On-board Computer Module for Formation Flying and Cluster Operation Nano-satellites

초소형 위성의 편대 및 군집 운용을 위한 모듈형 온보드 컴퓨터 개발

  • Received : 2019.06.10
  • Accepted : 2019.09.26
  • Published : 2019.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the minimized on-board computer (OBC) module for integrated navigation is developed, which provides satellites' relative position information in formation flying and cluster operation situations. The scalability is considered to apply the user-selected wireless communication module and Global Positioning System (GPS) receiver for navigation, while considering to meet the structural design standard of nano-satellites. As a result of the product development and production, the processing speed of integrated navigation and real-time data synchronization is satisfied for cluster operation nano-satellites by using micro controller unit (MCU). From a heat/vacuum, vibration and radiation test, the OBC was confirmed to be operated in space environments. From these results, a mass production system of OBC was made which is a key part of development on satellite formation flying and cluster/constellation missions that the community demands are increasing.

본 연구에서는 초소형 위성을 이용한 위성 편대 및 군집 운용 시 실시간으로 위성 간의 상대 위치 정보를 제공할 수 있는 통합 항법용 모듈형 온보드 컴퓨터(On-board Computer, OBC)를 개발하였다. 모듈은 구조적으로는 큐브위성의 기준 규격에 맞게 설계하되 사용자가 원하는 무선 통신모듈 및 항법용 Global Positioning System(GPS) 장비를 적용할 수 있도록 확장성을 고려하였다. 개발된 OBC는 제품 개발 및 제작 이후 야외 테스트를 통해 저전력 Micro Controller Unit(MCU)로 군집 운용을 수행하는 초소형 위성들의 통합 항법 및 실시간 데이터 동기화 요구 처리속도를 만족함을 확인하였다. 또한, 열진공, 방사능 시험을 거쳐 우주급 환경에서 정상 작동함을 확인하였으며, 진동시험의 경우 underfill 공정을 추가하면 정상적으로 요구조건을 만족할 수 있음을 확인하였다. 이를 통해 향후 수요가 늘어날 군집 운용을 위한 위성군 개발의 핵심 부품인 OBC의 대량생산 체계를 구축하였다.

Keywords

References

  1. Bandyopadhyay, S., Foust, R., Subramanian, G. P., Chung, S. J., and Hadaegh, F. Y., "Review of formation flying and constellation missions using nanosatellites," Journal of Spacecraft and Rockets, Vol. 53, No. 3, 2016, pp. 567-578. https://doi.org/10.2514/1.A33291
  2. Boshuizen, C., Mason, J., Klupar, P., and Spanhake, S., "Results from the Planet Labs Flock Constellation," 28th Annual AIAA/USU Conference on Small Satellites, August 2014.
  3. Foust, J., "SpaceX's space-Internet woes: Despite technical glitches, the company plans to launch the first of nearly 12,000 satellites in 2019," IEEE Spectrum, Vol. 56, No. 1, 2019, pp. 50-51. https://doi.org/10.1109/MSPEC.2019.8594798
  4. Nason, I., Puig-Suari, J., and Twiggs, R., "Development of a Family of Picosatellite Deployers Based on the CubeSat Standard," Proceedings of IEEE Aerospace Conference, Vol. 1, Mar. 2002, pp. 1-457.
  5. Williams, C., Doncaster, B., and Shulman, J., "2018 Nano/Microsatellite Market Forecast," Space-Works Enterprises, Inc., Vol. 1, 2019.
  6. Park, J. P., Park, S.-Y., Lee, K., Oh, H. J., Choi, K. Y., Song, Y. B., and et al., "Mission analysis and cubesat design for CANYVAL-X mission," 14th International Conference on Space Operations, May 2016.
  7. Song, Y., Lee, Y. R., Park, J. P., and Park, S. Y., "CANYVAL-X: Operational Scenario and Strategy," 2018 SpaceOps Conference, May, 2018.
  8. Lee, J. H., Lee, S. H., Lee, J. K., Lee, H. J., Shin, J. H., Jeong, S. Y., Oh, Y. S., and Jin, H., "Development of Flight Software for SIGMA CubeSat," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 44, No. 4, 2016, pp. 363-372. https://doi.org/10.5139/JKSAS.2016.44.4.363
  9. Hwang, K.-L., Min, M.-I., Moon, B.-Y., and Chang, Y.-K., "Mechanical System Design and Development of the HAUSAT-1 Picosatellite," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 32, No. 9, 2004, pp.103-113. https://doi.org/10.5139/JKSAS.2004.32.9.103
  10. Song, S. A., Kim, H. R., and Chang, Y.-K., "Design and Implementation of 3U CubeSat Platform Architecture," International Journal of Aerospace Engineering, Vol. 2018, 2018.
  11. van Bolhuis, M. F., Lebbink, G. W., Overlack, A. E., and Bonnema, A. R., "Environment Levels Auxiliary Payloads- ISILaunch09, Issue 1.2," ISL. ISILaunch09.EL, ISL-Innovative Space Logistics BV, 07 July 2015.
  12. Yoo, J. G., Jin, H., Seon, J. H., Jeong, Y. H., Glaser, D., Lee, D. H., and Lin, R. P., "Thermal analysis of TRIO-CINEMA mission," Journal of Astronomy and Space Sciences, Vol. 29, No. 1, 2012, pp. 23-31. https://doi.org/10.5140/JASS.2012.29.1.023
  13. NASA GSFC, "General Environmental Verification Standard (GEVS) for GSFC Flight Programs and Projects. (GSFC-STD7000A)," NASA Goddard Space Flight Center, Greenbelt, MD, USA, 2013.
  14. Campbell Jr, W. A., Marriott, R. S., and Park, J. J., "Outgassing data for selecting spacecraft materials," Technical Report, NASA Goddard Space Flight Center, Greenbelt, MD, June 1, 1984.
  15. Koh, Y.-W., Kim, J.-M., Lee, J.-H., and Shin, Y.-E., "Thermal Fatigue Characteristics of ${\mu}BGA$ Solder Joints with Underfill," Journal of Welding and Joining, Vol. 21, No. 4, 2013, pp. 25-30.
  16. Kim, Y. K., and Hwang, D., "Experimental Assessment of PBGA Packaging Reliability under Strong Random Vibrations," Journal of the Microelectronics & Packaging Society, Vol. 20, No. 3, 2013, pp. 59-62. https://doi.org/10.6117/kmeps.2013.20.3.059
  17. Seo, Y. M., Kim, Y. H., Park, S. H., Chae, K. S., Jin, H., Lee, D.-H., and Seon, J. H., "Computation of Total Ionizing Dose for CubeSat," Proceeding of The Korean Society for Aeronautical and Space Sciences Spring Conference, April 2012, pp. 1087-1092.