B1C Signal Modulation Implementation and Acquisition Research

摘要

BDSIII uses a new civilian navigation signal B1C modulation signal at the B1 frequency. In this paper, the mathematical model of B1C signal is established, and the signal modulation is implemented by Simulink. The autocorrelation function and phase detector curve of the signal component are compared. For the flexibility and diversity of B1C signal acquisition, BOC(1,1) signal and QMBOC are proposed. The signal is captured separately, and the algorithm research principle is mathematically deduced. Secondly, the performance of the algorithm is analyzed and the actual acquired B1C signal is captured and analyzed by MATLAB. The simulation shows that the local pilot component capture can obtain a higher peak-to-average ratio. The peak-to-average ratio is better when the B1C signal is captured, and the overall peak-to-average ratio is improved by about 6 dB. The algorithm research provides a new B1C signal synchronization. The idea.