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

  • 제12권8호
  • /
  • Pages.765-772
  • /
  • 2006
  • /
  • 1976-5622(pISSN)
  • /
  • 2233-4335(eISSN)
제어로봇시스템학회 (Institute of Control, Robotics and Systems)
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GPS Ll/L2C 상관기를 위한 빠른 신호 획득 기법

The Fast Signal Acquisition Scheme for a GPS Ll/L2C Correlator

  • 임덕원 (충남대학교 전자공학과) ;
  • 문승욱 (㈜네비콤 부설기술연구소) ;
  • 박찬식 (충북대학교 전기전자컴퓨터공학부) ;
  • 이상정 (충남대학교 전기정보통신공학부)
  • 발행 : 2006.07.01
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초록

The L2 Civil Signal (L2CS) will be transmitted by modernized IIR(IIR-M), IIF and all subsequent GPS satellites. It contains two codes of different length; CM code contains 10,230chips, repeats every 20milliseconds and is modulated with message data, and CL code contains 767,250chips, repeats every 1.5second Z-count and has no data modulation. And the message data is encoded for Forward Error Correction(FEC). The long code length is useful for weak signal, but it also requires very long acquisition time. Therefore, the structure of GPS Ll/L2C Correlator and the fast acquisition scheme are proposed in this paper.

키워드

참고문헌

  1. R. D. Fontana, W. Cheung, P. M. Novak, and T. Stansell, 'The new L2 civil signal,' in Proceedings of the 11th International Technical Meeting of the Satellite Division of the Institute of Navigation, pp. 617-631, 11-14 September 2001
  2. J. Bao-Yen Tsui, 'Fundamentals of global positioning system receivers,' Wiley-lnterscience
  3. A. Alaqeeli, J. Starzyk, and F. van Graas, 'Real-time acquisition and tracking for GPS receivers,' IEEE 2003 https://doi.org/10.1109/ISCAS.2003.1205933
  4. 김대호, 조득재, 이상정, 박찬식, 'Matched filter를 이용한 GPS L2CS 디지털 신호처리부 설계,' 제11차 GNSS Workshop 논문집, 2004. 11, 서울