Study on GPS L2C Acquisition Algorithm and Performance Analysis

L2C is a new civilians signal, broadcast by the modernized GPS Block IIR-M satellites. In order to access acquisition performance of GPS L2C signal, the algorithm of L2C signal is discussed firstly in the paper. That is, after acquisition of CM code by using locally generated Return to Zero (RZ) CM code and FFT, the fixed relationships between CM code and CL code are used to realize acquisition of CL code. Simulation shows that this method can complete acquisition of L2C quickly and can be applied to L2C software receiver. Then the performance of this acquisition algorithm is analyzed by using statistical theory. A general method of anti-jamming capability determination is constructed that can be applied into the analysis of the anti-jamming tolerance of other GNSS signals.