DOI QR코드

DOI QR Code

Improvement of Time Synchronization over Space Wire Link

스페이스와이어 링크의 시각 동기 성능 개선

  • 류상문 (군산대학교 제어로봇시스템공학과)
  • Published : 2009.11.01

Abstract

This paper deals with the time synchronization problem over SpaceWire links. SpaceWire is a standard for high-speed links and networks between spacecraft components, which was invented for better, cheaper, faster on-board data handling in spacecraft. The standard defines Time-Code for time distribution over SpaceWire network. When a Time-Code is transmitted, transmission delay and jitter is unavoidable. In this paper, a mechanism to remove Time-Code transmission delay and jitter over SpaceWire links is proposed and implemented with FPGA for validation. The proposed mechanism achieves high resolution clock synchronization over SpaceWire links, complies with the standard and can be easily adopted over SpaceWire network.

Keywords

References

  1. F. Pinsard and C. Cara, 'High resolution time synchronization over spacewire links,' Proc. of 2008 IEEE Aerospace Conference, pp. 1-8, Mar. 2008
  2. 조현태 외, 'TDOA 기반의 실시간 위치 측정 시스템을 위한 정밀 무선 시각 동기 시스템,' 한국통신학회논문지, 제34권 제1호, pp. 86-97, 2009
  3. 조현태 외, 'ZigBee를 이용한 무선 네트워크 환경에서의 정밀 시각 동기 기법 설계 및 구현,' 한국통신학회논문지, 제33권 제5호, pp. 561-570, 2008
  4. 조정현 외, 'LAN에서 시간에 민감한 트래픽을 위한 시각 동기화 기법,' 한국통신학회논문지, 제33권 제6호 pp. 234-241, 2008
  5. 서영수, 'CAN 시간동기를 이용한 복수 전동기 동기제어,' 제어.로봇.시스템학회 논문지, 제14권 제7호 pp. 624-628, 2008 https://doi.org/10.5302/J.ICROS.2008.14.7.624
  6. 박수환 외, '분산 컴포넌트 시스템에서 동기화된 시간의 정밀도를 높일 수 있는 기법,' 2008 한국컴퓨터종합학술대회논문집, '제35권 제1호, pp. 500-503, 2008
  7. 황소영 외, '인터넷 기반 분산 환경에서 시각 동기를 위한 임베디드 시스템,' 정보과학회논문지, 컴퓨팅의 실제, 제11권 제3호, pp. 216-223, 2005
  8. A. Hanzlik and A. Ademaj, 'A composable algorithm for clock synchronization in multi-cluster real-time systems,' Proc. of 2006 International Workshop on Intelligent Solutions in Embedded Systems, pp.1-12, Jun. 2006
  9. K. Sun, P. Ning, and C. Wang, 'Secure and resilient clock synchronization in wireless sensor networks,' IEEE Journal of Selected Areas in Communications, vol. 24, no. 2, pp. 395-408, Feb. 2006 https://doi.org/10.1109/JSAC.2005.861396
  10. K. Arvind, 'Probabilistic clock synchronization in distributed systems,' IEEE Trans. on Parallel and Distributed Systems, vol. 5, no. 5, pp. 474-487, May 1994 https://doi.org/10.1109/71.282558
  11. D. L. Mills, 'Precision synchronization of computer network clocks,' ACM SIGCOMM Computer Communication Review, vol. 24, no. 2, pp. 28-43, Apr. 1994 https://doi.org/10.1145/185595.185651
  12. IEEE Standard 1588, 'IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems'
  13. ESA Standard, 'ECSS-E-ST-50-12C : SpaceWIre-Links, nodes, routers and networks,' 2008
  14. IEEE Standard 1355, 'IEEE Standard for Heterogeneous Interconnect (HIC).'

Cited by

  1. Analysis of transmission delay of timecode over SpaceWire network using OMNeT++ vol.19, pp.9, 2015, https://doi.org/10.6109/jkiice.2015.19.9.2022