Abstract:

The traditional acquisition methods only search the code phase or Doppler shift of the single satellite. Firstly, in order to improve the efficiency of signal acquisition for the visible satellites in receivers, a simultaneous acquisition algorithm of multiple satellites for BeiDou B1 signals is proposed. Secondly, the mapping relationship between the simultaneous searching satellite’s phase and the corresponding satellite number is built based on the proposed acquisition algorithm. Finally, the collected intermediate frequency signal is used to test the performance of various acquisition methods. The experiment results indicate that the proposed algorithm is capable of detecting multiple visible satellites and can improve the processing efficiency of signal acquisition in BeiDou receivers with an average operation speed improved by over 23%.