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Volume 32 Issue 06
Jun.  2006
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Journal of Beijing University of Aeronautics and Astronautics  > 2006  >  32(06): 687-690.
Xing Zhaodong, Zhang Qishan, Yang Dongkaiet al. Acquisition for BOC (1,1) signal in GALILEO receiver[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(06): 687-690. (in Chinese)
Citation: Xing Zhaodong, Zhang Qishan, Yang Dongkaiet al. Acquisition for BOC (1,1) signal in GALILEO receiver[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(06): 687-690. (in Chinese)
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Acquisition for BOC (1,1) signal in GALILEO receiver

  • School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 26 Apr 2005
  • Publish Date: 30 Jun 2006
    Abstract
  • The zero values in BOC(1,1)(binary-offset-carrier) signal correlation function could make the receiver judge that the signal was not acquired. From the sub-carrier phase and code phase viewpoint, an acquisition method with three parallel tags was proposed to acquire the BOC(1,1) completely. The BOC(1,1) and its spread code correlation function figure were drawn by digital simulation, and the correlation function peaks were compared. The analytic formula for BOC(1,1) autocorrelation function was deduced, the position for peak values and zero values were shown. The correlation function values and acquisition were compared between BOC(1,1) and its spread code. The phase in one tag served as benchmark, the other two tags phases were respectively earlier or later than the benchmark in three local BOC(1,1) signals. The generation method for three local BOC(1,1) signals and the acquisition method figure were shown. When the difference of code phase between the received and the local BOC(1,1) signal lies in the half code chip, the signal acquisition rate increases from 33.3% to 100%,and the code phase range increases from 1/6 to 1/2 chip width by simulation. The method can provide phase information to the track loop and adapt to acquisition for BOC(n,n) signal.

     

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  • [1] 赵静. 中国正式加入伽利略(GALILEO)计划[J]. 太空探索, 2005(1):6-7 Zhao Jing. China formally joins GALILEO plan[J]. Space Exploration, 2005(1):6-7(in Chinese) [2] Hein G W, Godet J, Issler J, et al. Status of Galileo frequency and signal design International of Navigation GPS. Portland:ION,2002:266-277 [3] Hein G W,Irsigler M, Rodriguez J A A, et al. Performance of Galileo L1 signal candidates Europe Navigation Conference GNSS. Netherlands:EUGIN, DGON, 2004 [4] Julien O, Cannon M E, Lachapelle G, et al. A new unambiguous BOC(n,n) signal tracking technique Europe Navigation Conference GNSS. Netherlands:EUGIN, DGON, 2004 [5] Martin N, Leblond V, Guillotel G, et al. BOC(x,y) signal acquisition techniques and performances International of Navigation GPS/GNSS. Oregon:ION, 2003:188-198 [6] Betz J W. Binary offset carrier modulations for radionavigation[J]. Navigation,2001,4(48):227-246 [7] Fischer S, Berberich S, Heim J, et al. Simulation & verification of new architectures for Galileo navigation signal demodulation International of Navigation GPS/GNSS. Oregon:ION, 2003:2021-2030 [8] Ward P W. A design technique to remove the correlation ambiguity in binary offset carrier (BOC) spread spectrum signals International of Navigation 59th Annual Meeting/CIGTF 22nd Guidance Test Symposium. New Mexico:ION, 2003:146-155 [9] Dierendonck A J, Schumpert V M, Fenton P. Acquisition, tracking and mitigating multipath using the proposed split spectrum C/A-code at L2 International of Navigation GPS. Tennessee:ION, 1998:1895-1903 [10] Betz J W. The offset carrier modulation for GPS moedernization International of Navigation NTM. California:ION, 1999:639-648
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