Implementation of Acquisition Algorithm for Multi-system Software-based BD/GPS Receiver

The development of the global satellite navigation system receiver has moved the trend of multi-system integration. It is of vital significant to implement a fast and efficient acquisition algorithm of a multi-system software receiver. The multi-system signal acquisition algorithm based on FFT is proposed by using the collected satellite signal data and simulated on the MATLAB platform. The algorithm can simultaneously process the BD/GPS intermediate frequency signal and achieve the signal capture of two systems of BD/GPS. The process of base-band signal acquisition of BD/GPS software receiver is verified by simulation and the acquisition results are given. The results show that the algorithm is efficient, and can capture satellite signals very well. Numerical results show that the method is feasible in the software receiver system and can realize the acquisition of BD/GPS satellite signals.