Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Performance Comparison of GPS Fault Detection and Isolation via Pseudorange Prediction Model based Test Statistics

  • Yoo, Jang-Sik (Department of Aerospace Information Engineering, Konkuk University) ;
  • Ahn, Jong-Sun (Department of Aerospace Information Engineering, Konkuk University) ;
  • Lee, Young-Jae (Department of Aerospace Information Engineering, Konkuk University) ;
  • Sung, Sang-Kyung (Department of Aerospace Information Engineering, Konkuk University)
  • Received : 2011.10.24
  • Accepted : 2012.05.14
  • Published : 2012.09.01
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Abstract

Fault detection and isolation (FDI) algorithms provide fault monitoring methods in GPS measurement to isolate abnormal signals from the GPS satellites or the acquired signal in receiver. In order to monitor the occurred faults, FDI generates test statistics and decides the case that is beyond a designed threshold as a fault. For such problem of fault detection and isolation, this paper presents and evaluates position domain integrity monitoring methods by formulating various pseudorange prediction methods and investigating the resulting test statistics. In particular, precise measurements like carrier phase and Doppler rate are employed under the assumption of fault free carrier signal. The presented position domain algorithm contains the following process; first a common pseudorange prediction formula is defined with the proposed variations in pseudorange differential update. Next, a threshold computation is proposed with the test statistics distribution considering the elevation angle. Then, by examining the test statistics, fault detection and isolation is done for each satellite channel. To verify the performance, simulations using the presented fault detection methods are done for an ideal and real fault case, respectively.

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References

  1. KwangHoon Kim, An Adaptive Filter Design for a Fault Tolerant Navigation System, Ph.D Dissertation, School of Electrical Engineering & Computer Science, Seoul National University, Feb. 2006.
  2. Pullen SP, Pervan BS, Parkinson BW, "A new approach to GPS integrity monitoring using prior probability models and optimal threshold search," PLANS '94, Las Vegas, NV, April 1994.
  3. EunSung Lee, Multiple Fault Detection and Isolation of GPS Carrier Measurement Using Array Antenna System, Ph.D Dissertation, Dept. of Aerospace Engineering, Konkuk University, Dec. 2004.
  4. YOUNG C. LEE, "Analysis of Range and Position Comparison Methods as a Means to Provide GPS Integrity in the User Receiver," Proceedings of the Institute of Navigation Forty-second Annual Meeting, June, 1986.
  5. Brown, R.G. and Hwang, P., "GPS Failure Detection by Autonomous Means within the Cockpit," Proceedings of the Annual Meeting of the ION, Seattle, WA, 24-26 June 1986.
  6. YOUNG C. LEE, "Position Domain Relative RAIM Method," Proceedings of the IEEE Position, Location, and Navigation Symposium (PLANS 2008), Monterey, CA, May 5-8, 2008.
  7. Feng S, Ochieng WY., Moore, T. Hill, C., and Hide, C., "Carrier Phase Based Integrity Monitoring for High Accuracy Positioning," GPS Solutions, 13 (1), pp.13-22.
  8. Li Jian, Liu Feng, Long Teng, "Study of Direct Acquisition of GPS P-code in Low-SNR," Proceedings of the 2008 Second International Symposium on Intelligent Information Technology Application, December, 2008.
  9. R. Da, "Faulure Detection of Dynamical Systems with the State Chi-Square Test," Journal of Guidance, Control, and Dynamics. Vol 17, No. 2, March-April 1994.
  10. R. Grover Brown, "Solution of the Two-Faulure 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. Chang Sun Yoo, Iee Ki Ahn, Sang Jeong Lee, "Two-Failure GPS RAIM by Parity Space Approach," Journal of Korean Society for Aeronautical & Space Sciences, Vol. 31, No. 6, Aug, 2003, pp. 52-60. https://doi.org/10.5139/JKSAS.2003.31.6.052
  12. Gang Xie, "Optimal On-Airport Monitoring of the Integrity of GPS-Based Landing Systems," Ph. D Thesis, 2004, Stanford University, pp 26-37.
  13. Yong-Woon Ahn, et. al., "The Abnormal Increasing Pseudorange Satellite Detection Method Using Comparison of Residual Horizontal Projection," Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 38, No. 6, June 2010, pp. 570-576. https://doi.org/10.5139/JKSAS.2010.38.6.570
  14. Young C. Lee, "Analysis of Range and Position Comparison Method as a Means to Provide GPS Integrity in the User Receiver," Proceedings of the Annual Meeting of the Institute of Navigation, Seattle, Washington, June 1986.
  15. S. Ryan, G. Lachalelle and M.E. Cannon, "DGPS Kinematic Carrier Phase Signal Simulation Analysis in the Velocity Domain", Proceedings of ION GPS 97, September, 1997.
  16. Weidong Ding and Jinling Wang, "Precise Velocity Estimation with a Stand-Alone GPS Receiver," Journal of Navigation, Vol. 64, Issue 02, April 2011, pp 311-325. https://doi.org/10.1017/S0373463310000482
  17. Jongsun Ahn, Rosihan, Dae Hee Won, Young Jae Lee, and Sangkyung Sung, "GPS Integrity Monitoring Method Using Auxiliary Nonlinear Filters with Log Likelihood Ratio Test Approach," Journal of Electrical Engineering and Technology, Vol6. No. 4, 2011, pp. 563-572. https://doi.org/10.5370/JEET.2011.6.4.563