한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제6권1호
  • /
  • Pages.59-67
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  • 2003
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  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
권호 표지

자기 상관 차분 함수를 이용한 다중 경로 오차 감쇄 기법

Multipath Error Mitigation using Differenced Autocorrelation Function

  • 최일흥 (충남대학교 전자공학과 대학원, ㈜네비콤) ;
  • 이상정 (충남대학교 정보통신공학부)
  • 발행 : 2003.05.01
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초록

Multipath is an inevitable error source in radio navigation system such as GPS, it causes signal tracking errors such as carrier tracking errors, code tracking errors. Since code tracking error is a dominant error in absolute positioning, this paper focuses on the improvement of code tracking performance. This paper proposes a method that detects the change of autocorrelation function's slope and mitigates the multipath error. Also, this paper shows the performance evaluation results by post-processing the digitized RF samples.

키워드

참고문헌

  1. C. Loa. 'Digital Transmission Through a Land Mobile Satellite Channel,' IEEE Transactions on Communications, Vol.38, No.5, pp.693-697, May 1990
  2. AJ, Van Dierendonck, 'Theory and Performance of Narrow Correlator Spacing in a GPS Receiver,' pp.115-124, ION GPS 92
  3. B. Townsend and P. Fenton, 'A Practical Approach to the Reduction of Pseudorange Multipath Errors in a Ll GPS Receiver,' pp. 143-148, ION GPS 94
  4. D.J.R. van Nee, Multipath and Multi-Transmitter Interference in Spread-Spectrum Communication and Navigation Systems, Delft University, 1995
  5. P. G. Mattos, 'Multipath elimination for the low-cost conswner GPS,' pp.665-671, ION GPS 96
  6. L. Garin, et al., 'Enhanced Strobe Correlator Multipath Rejection for Code & Carrier,' pp. 559-568, ION GPS 97
  7. F.P. Baier, A CPS Code Tracking Receiver Design for Multipaili Mitigation Using Maximum Likelihood Estimation, AFIT, DEC. 1997
  8. I.H. Choi, et al., 'A Multipath Mitigation Method Using the Nonsymmetric Ratio of the Autocorrelation Function', ION GPS 2000