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Volume 41 Issue 10
Oct.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(10): 1918-1924.
MU Weiqing, LIU Rongke, SONG Qingping, et al. Carrier tracking algorithm based on bandwidth optimization[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1918-1924. doi: 10.13700/j.bh.1001-5965.2014.0715(in Chinese)
Citation: MU Weiqing, LIU Rongke, SONG Qingping, et al. Carrier tracking algorithm based on bandwidth optimization[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1918-1924. doi: 10.13700/j.bh.1001-5965.2014.0715(in Chinese)
shu

Carrier tracking algorithm based on bandwidth optimization

doi: 10.13700/j.bh.1001-5965.2014.0715

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

  • Received Date: 18 Nov 2014
  • Rev Recd Date: 19 Dec 2014
  • Publish Date: 20 Oct 2015
    Abstract
  • In the existing high dynamic weak signal carrier tracking algorithm, frequency locked loops (FLL) auxiliary phase locked loops (PLL) carrier tracking algorithm has the problem that the loop adjusted discontinuously, and easily lost lock. More optimal combination FLL with PLL algorithm and transition process of combination loop were given, threshold for state transition was determined. Aiming at the problem that bandwidth adjustment is not accurate, the optimal PLL loop bandwidth and the bandwidth adjustment strategy were confirmed, the loop bandwidth was adjusted in real-time. In the presence of jerk cases and signal-to-noise ration is 3dB, the tracking error is around 3Hz.

     

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