Research on acquisition algorithms of GPS receiver

The system of the high dynamic GPS receiver in the satellite positioning, the key technology of the system is signal acquisition. The high dynamic characteristics of the system makes the GPS signal phase delay and Doppler frequency shift, so this increases the difficulty of signal capture. In this paper, the theory is related, and the characteristics and shortcomings of the present capture method is analyzed, a fast acquisition method which can reuse the FFT results is presented, and the Doppler frequency shift of the carrier wave is accurately estimated. This method is proved feasibly in theory, the simulation shows that the algorithm can realize the quick capture of the signal.