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2017 | 24 | Special Issue S2 |
Tytuł artykułu

Optimized design and analysis of offshore Beidou Maritime Foundation reinforcement system pseudolite ranging-codes

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Under the bad sea conditions and weak Beidou navigation signal environment, it is difficult to locate the ship on the sea, and the Beidou navigation system can’t work well. Beidou pseudolite system can improve the performance of Beidou navigation system as a navigation signal transmitter fixed on the ground, the signal of which can improve satellite positioning constellation structure, and improve the system availability reliability and precision. In order to ensure the interoperability and non-correlation of the Beidou pseudolite and the Beidou navigation system, the pseudolite ranging-codes should be selected in the same code space of the satellite ranging-codes and the residual pseudo random code generated by the 2 taps design scheme does not satisfy the performance requirements of the ranging-codes. To solve this issue, a combined design scheme with 3 taps is proposed, and 12 kinds of pseudolite ranging-codes are optimally selected according to the optimum design parameters of ranging-codes. The waveform and correlation of the selected pseudolite ranging-codes are analyzed by MATLAB, the acquisition simulation is carried out by using the new pseudolite ranging-codes. The experimental results show that the new 3-taps based ranging codes design scheme behaves a good balance, correlation and spectral characteristics
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  • School of Information Engineering, Wuhan University of Technology, Wuhan, 430074, China
  • School of Information Engineering, Wuhan University of Technology, Wuhan, 430074, China
  • China Transport Telecommunications and Information Center, Beijing, 100011, China
  • School of Automation, Wuhan University of Technology, Wuhan, 430074, China
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