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

GPS Carrier Phase Fault Detection with Consideration on User Dynamics

사용자 다이나믹을 고려한 GPS 반송파 고장검출

  • Received : 2012.01.28
  • Accepted : 2012.11.27
  • Published : 2012.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a Carrier phase fault detection (FD) method for GPS RTK (Global Positioning System Real Time Kinematic) in dynamic environment. There are various error sources in dynamic environment and these errors decrease the reliability of FD results. Due to the reason, Carrier phase measurements are separated into satellite induced signal, user induced signal and other remaining errors. Especially the user-induced signal is computed by user dynamic which is estimated by time-differenced Carrier phase (TDCP) and Doppler shift. TDCP makes it possible to avoid integer ambiguity resolution. Computer simulation is conducted to verify the suggested method. By applying impulse, step and ramp faults, the FD performance is analyzed.

본 논문은 동적환경의 GPS RTK (Global Positioning System Real Time Kinematic) 수행을 위한 반송파 고장검출에 대해 기술한다. 다양한 고장요소에 노출된 동적수신환경에서 신뢰성 높은 반송파를 확보하기 위해 신호변화 요인을 분리하여 이상 유/무를 판별하는 기법을 사용하였다. 신호변화 요소는 사용자 다이나믹, 위성 다이나믹, 오차요인으로 분리하였으며, 상대적으로 불규칙한 사용자 다이나믹 추정 성능 향상을 위해 미지정수가 소거된 시간차분 반송파와 도플러를 혼합하여 사용하였다. 시뮬레이션을 통해 제안한 검출 기법의 성능을 검증하였으며, 임펄스, 스텝, 램프 고장에 대한 검출 가능성을 분석하였다.

Keywords

References

  1. T. Walter, P. Enge, J. Blanch and B. Pervan, "Worldwide Vertical Guidance of Aircraft Based on Modernized GPS and New Integrity Augmentations", Proceedings of the IEEE, Vol.96, No.12, pp.1928-1935, 2008, doi: 10.1109/JPROC.2008.2006099.
  2. J. Lee, GPS-Based Aircraft Landing Systems with Enhanced Performance: Beyond Accuracy, Ph.D. Dissertation, Stanford University, March 2005.
  3. K. Ishikawa, Y. Amano, T. Hashizume and J. Takiguchi, "A Study of Precise Road Feature Localization using Mobile Mapping System", 2007 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Switzerland, September 4-7, 2007, doi: 10.1109/AIM.2007.4412541.
  4. B. Hoffmann-Wellenhof, H. Lichtenegger and E. Walse, GNSS; GPS, GLONASS, Galileo & more, Springer Wien New York, 2008, doi:10.1007/978-3-211-73017-1_3.
  5. S. Pullen, T. Walter, P. Enge, "SBAS and GBAS Integrity for Non-Aviation User: Moving Away from Specific Risk", International Technical Meeting of The Institute of Navigation, San Diego, USA, pp.533-545, 2011.
  6. D. H. Won, J. Ahn, S. Sung, Y. J. Lee, "User Oriented GPS Carrier phase Fault Detection in Dynamic Condition", Proceeding of the 2010 KSAS fall conference (I), pp.603-606, 2010.
  7. D. V. Simili and B. Pervan, "Code-Carrier Divergence Monitoring for the GPS Local Area Augmentation System", Proceedings of the IEEE Position, Location, and Navigation Symposium (PLANS 2006), San Diego, CA, April 24-27, 2006, doi: 10.1109/PLANS.2006.1650636
  8. G. Xie, Optimal On-Airport Monitoring of the Integrity of GPS-Based Landing Systems, Ph.D. Dissertation, Stanford University, March 2004.
  9. L. Gratton, M. Joerger and B. Pervan, "Carrier Phase Relative RAIM Algorithms and Protection Level Derivation", Proceedings of ION-ITM 2009, 2009.
  10. S. P. Mertikas and C. Rizos, "On-line Detection of Abrupt Changes in the Carrier-phase Measurements of GPS", Journal of Geodesy, Vol. 71, No. 8, pp.469-482, 1997, doi:10.1007/s001900050115.
  11. W. Ding and J. Wang, "Precise Velocity Estimation with a Stand-alone GPS Receiver", Journal of Navigation, Vol.64, No.2, pp.311-325, 2011, doi: c. https://doi.org/10.1017/S0373463310000482.
  12. D. H. Won, A Generalized Performance Index for GNSS and Vision/INS Integrated Navigation, Ph.D. Dissertation, Konuk University, 2012.
  13. D. Borio, N. Sokilova, G. Lachapelle, "Doppler measurement accuracy in standard and high sensitivity global navigation satellite system receivers", IET Radar Sonar Navig., Vol.5, No.6, pp.657-665, 2011, doi: 10.1049/iet-rsn.2010.0249
  14. S. Pullen, J. Lee, G. Xie, P. Enge, "CUSUM-Based Real-Time Risk Metrics for Augmented GPS and GNSS", ION GPS/GNSS 2003, Portland USA, September 9-12, 2003.