GNSS World of China

Volume 48 Issue 5
Oct.  2023
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DAI Zhihui, RAO Yongnan, GUO Yao. Accuracy analysis of GPS L2C signal quality assessment by different tracking methods[J]. GNSS World of China, 2023, 48(5): 56-63. doi: 10.12265/j.gnss.2023097
Citation: DAI Zhihui, RAO Yongnan, GUO Yao. Accuracy analysis of GPS L2C signal quality assessment by different tracking methods[J]. GNSS World of China, 2023, 48(5): 56-63. doi: 10.12265/j.gnss.2023097
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Accuracy analysis of GPS L2C signal quality assessment by different tracking methods

doi: 10.12265/j.gnss.2023097
  • 1.

    National Time Service Centre, Chinese Academy of Sciences, Xi’an 710600, China

  • 2.

    Key Laboratory of Precise Navigation and Timing Technology, Chinese Academy of Science, Xi’an 710600, China

  • 3.

    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Science, Beijing 101048, China

  • Received Date: 2023-05-05
  • Accepted Date: 2023-05-05
    • Available Online: 2023-10-25
    Abstract
  • The quality of satellite signals affects user performance, and signal quality evaluation can be achieved by utilizing the tracking results of software receivers. The pseudo-code of GPS L2C signal is composed of CM code and CL code time division multiplexing. According to its signal characteristics, different tracking methods can be used for tracking. The influence of different tracking methods on the accuracy of signal evaluation is analyzed, and the signal consistency and signal correlation performance are analyzed. Through simulation signal analysis and measured data verification, the results show that the joint tracking has higher evaluation accuracy than the single component tracking, and the evaluation results of each index are better than the evaluation results of a single branch. The use of joint tracking will bring smaller ranging error.

     

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