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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Two-Failure Gps Raim by Parity Space Approach

패러티 공간을 이용한 2개 GPS 파라미터 고장진단

  • 유창선 (한국항공우주연구원 스마트무인기 사업단) ;
  • 안이기 (한국항공우주연구원 항법제어연구그룹) ;
  • 이상정 (충남대학교 전자공학과)
  • Published : 2003.08.01
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Abstract

In aviation navigation using GPS, requirements on availability and integrity must be absolutely satisfied. Current study on accomplishing this integrity includes RAIM(Receiver Autonomous Integrity Monitoring), monitoring integrity internaIly in GPS receiver itself. Parity space technique as one of RAIM techniques has shown the advantages in fault detection and isolation due to each use of its magnitude and direction under the assumption of one fault. ln case of multiple fault, as biases in errors interact decreasing the effect of multiple fault in parity space, the exact fault detection and identification(FDI) may be difficult to be conducted. This paper focuses on FDI study on two faults and explains why parity space techniques applied on single fault is not adequate to the application of multiple fault case and shows that extended parity space technique may improve the performance of RAIM on two faults.

GPS(Global Positioning System)를 이용한 항공항법은 이용성과 무결성의 만족을 절대적으로 요구하고 있다. GPS의 무결성에 대한 연구로서 GPS수신기 내부 자체에서 무결성을 모니터링하는 다양한 RAIM(Receiver Autonomous Integrity Monitoring)기법이 연구되어 왔으며 이들 중에서 패러티 공간을 이용한 고장진단기법은 패러티 백터의 크기와 방향성을 이용할 수 있는 편리성을 갖고 있어 비교적 많은 연구가 진행되어 왔다. 한편, 지금까지의 RAIM 기법들은 대부분 단일고장을 가정하며, 실제 적용시 발생할 수 있는 다중고장의 경우 오차요인들의 상호간섭으로 정확한 식별이 어렵다는 단점을 갖고 있다. 본 논문에서는 확장된 패러티 공간에서 고장진단을 다룸으로써 2개의 고장식별에의 적용이 가능함을 보였다.

Keywords

References

  1. RTCA Special Committee 159, Minimum Operational Performance Standards for Airborne Supplemental Navigation Equipment Using Global Positioning System(GPS), RTCA/DO-208, RTCA, Washington, D.C. 20036, July 1991 (MOPS 208).
  2. Brown, R.G. RAIM, in GPS : theory and applications Volume 2, eds. B.W.Parkin and J.J.Spilker Jr., AIAA, 1996.
  3. Lee, Y. C, "Analysis of Range and Position Comparison Methods as a Means to Provide GPS Integrity in the User Receiver," Proceeding of the Annual Meeting of the ION, June 24-26,1986. pp.1-4.
  4. Brown, R. G. and McBurney, P. W. "Self-contained GPS failure Detection: The Kalman Filter Approach," Proceedings of the ION Satellite Division Technical Meeting, 1987.
  5. Parkinson, B. W., and Axelrad, P., "Autonomous GPS Integrity Monitoring Using the Pseudorange Residual," Navigation, Vol.35, No.2,1988, pp. 255-274. https://doi.org/10.1002/j.2161-4296.1988.tb00955.x
  6. Mark A. Sturza and Alison K. Brown, "Comparision of Fixed and Varable Threshold," ION GPS-90, Sep 19-20.
  7. Alison K. Brown, and Mark A. Sturza, "The Effect of Geometry on Integrity Monitoring Performance," Proceedings of the Institute of Navigation Annual Meeting, June 1990.
  8. Dr. R. Grover Brown and Gerald Y. Chin and John H. Kraemer, "Update on GPS Integrity Requirements of the RTCA MOPS", ION GPS-91, Sep. 11-13.
  9. Brown R. G, "A Baseline RAIM Scheme and a Note on the Equivalance of Three RAIM Methods", Nation Technical Meeting, Jan 27-29, 1992.
  10. R. Grover Brown, "Solution of the Two-Failure GPS RAIM Problem Under Worst-Case Bias Conditions : Parity Space Approach," Journal of The ION, Vol. 44, No. 4, Winter 1997-1998, pp. 425-431.
  11. Toshihiko Ono, "Some Studies on Fault Diagnosis of Dynamic Systems", IEEE IECON'91, pp. 2157-2162.
  12. Toshihiko Ono, "Diagnosis of Multiple Faults in Dynamic Systems," 일본 전자론학회, 113권 8호, 1993.
  13. Asok Ray, Mukund Desai, "A Redundancy Management Procedure for Fault Detection and Isolation," Transactions of the ASME, Vol. 108, Sept. 1986, pp.248-254. https://doi.org/10.1115/1.3246912
  14. 유창선, 이상정, "Parity Space 기법을 이용한 RAIM 적용연구," '99 항공우주학회 춘계학술대회, pp 489-492, 1999. 4.
  15. K.CDaly, E.Gai, and J.V.Harrison, "Generlaized Likelihood Test for FDI in Redundant Sensor Configurations," Journal of Guidance and Control, Vol. 2, No.1, Jan.-Feb. 1979.

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  2. Two-Faults Detection and Isolation Using Extended Parity Space Approach vol.7, pp.3, 2012, https://doi.org/10.5370/JEET.2012.7.3.411
  3. Fault Detection Performance Analysis of GNSS Integrity RAIM vol.20, pp.3, 2012, https://doi.org/10.7319/kogsis.2012.20.3.049