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Volume 37 Issue 2
Feb.  2011
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Journal of Beijing University of Aeronautics and Astronautics  > 2011  >  37(2): 245-248.
Yang Zaixiu, Huang Zhigang, Geng Shengqunet al. Novel tracking loop of BOC signal based on subcarrier tracking[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(2): 245-248. (in Chinese)
Citation: Yang Zaixiu, Huang Zhigang, Geng Shengqunet al. Novel tracking loop of BOC signal based on subcarrier tracking[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(2): 245-248. (in Chinese)
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Novel tracking loop of BOC signal based on subcarrier tracking

  • School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 09 Dec 2009
  • Publish Date: 28 Feb 2011
    Abstract
  • In order to eliminate the tracking ambiguity of binary offset carrier (BOC) signal, a novel tracking loop based on subcarrier tracking was proposed. Compared with traditional tracking loop, the proposed architecture provides a subcarrier locked loop to track subcarrier. The innovative tracking loop architecture resolves the tracking ambiguity problem by tracking the subcarrier and spread spectrum code respectively. The subcarrier was synchronized with the local sinusoidal signal using phase lock loop (PLL), which exploits the periodic feature of the subcarrier of BOC signal. Figures of merit, such as code tracking error, tracking threshold and mean time to lose lock (MTLL) have been analyzed and evaluated through software simulations. Simulation results show that the novel tracking loop can improve the tracking performance of weak signal and enhance the tracking loop stability with little degradation in tracking accuracy.

     

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    • References(1)
  • [1] Betz J W.Binary offset carrier modulations for radio navigation [J].Journal of The Institution of Navigation,2001,48(4):227-246 [2] Fine P,Wilson W.Tracking algorithm for GPS offset carrier signal // Proceedings of the ION 1999 National Technical Meeting.San Diego,CA:Institute of Navigation,1999:671-676 [3] Hodgart M S,Blunt P D,Unwin M.Double estimator-a new receiver principle for tracking BOC signals [J].Inside GNSS,2008,3(3):26-36 [4] Hodgart M S,Blunt P D.Dual estimate receiver of binary offset carrier modulated signals for global navigation satellite systems [J].Electronics Letters,2007,43(16):877-878 [5] Latour A,Grelier T,Artaud G,et al.Subcarrier tracking performances of BOC,ALTBOC and MBOC signals //ION GNSS 2007.Fort Worth:Institute of Navigation,2007:769-781 [6] Anantharamu P B,Borio D,Lachapelle G.Pre-filtering,side-peak rejection and mapping:several solutions for unambiguous BOC tracking //ION GNSS 2009.Savannah,GA:Institute of Navigation,2009:3142-3155 [7] Golshan A R.Post-correlator modeling for fast simulation and joint performance analysis of GNSS code and carrier tracking loops //Proceedings of the ION 2006 National Technical Meeting.Monterey,CA:Institute of Navigation,2006:312-318
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