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.
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
J. Bao-Yen Tsui, 'Fundamentals of global positioning system receivers,' Wiley-lnterscience
A. Alaqeeli, J. Starzyk, and F. van Graas, 'Real-time acquisition and tracking for GPS receivers,' IEEE 2003
김대호, 조득재, 이상정, 박찬식, 'Matched filter를 이용한 GPS L2CS 디지털 신호처리부 설계,' 제11차 GNSS Workshop 논문집, 2004. 11, 서울
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Song, Seung-Hun ; Park, Ji-Won ; Park, Ji-Hee ; Sung, Tae-Kyung 2011. "Performance Analysis of Signal Acquisition in L2C Assisted GPS Receivers" 제어·로봇·시스템학회 논문지 = Journal of institute of control, robotics and systems, 17(1): 61~67