A New FFT-Based Acquisition Algorithm for GPS Signals

General acquisition algorithms for GPS signals in time domain and frequency domain have some advantages and disadvantages. A new modified averaging circular correlation algorithm based on FFT is proposed and its realization process is given in this paper. Compared with the general algorithms its performance is improved. This novel algorithm is demonstrated using actual sampling data of GPS signals in Matlab environment. Simulation results show that it has fast acquisition ability and is easy to implement. It is an efficient and low cost acquisition algorithm for GPS receivers.