Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Channelwise Multipath Detection for General GPS Receivers

일반적인 GPS 수신기를 위한 채널별 다중경로오차 검출 기법

  • 이형근 (BK21 서울대-고려대 정보기술 사업단) ;
  • 이장규 (서울대 전기·컴퓨터 공학부) ;
  • 지규인 (건국대학교 전자공학과)
  • Published : 2002.09.01
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Abstract

Since multipath phenomenon frequently occurs when a Global Positioning System receiver is placed in urban area crowded with large buildings, efficient mitigation of multipath effects is necessary to resolve. In this paper, we propose a new multipath detection technique that is useful in real-time positioning with a general Global Positioning System receiver. The proposed technique is based on a channelwise multipath test statistic that efficiently indicates the degree of fluctuations induced by multipath error. The proposed multipath test statistic is operationally advantageous because it does not require any specialized hardware nor any pre-computation of receiver position, it is directly related to standard $\chi$$^2$-distributions, and it can adjust the detection resolution by increasing the number of successive measurements. Simulation and experiment results verify the performance of the proposed multipath detection technique.

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References

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