GPS系统C/A码的产生与捕获算法的仿真与研究

he C/A code transmitted from the GPS Satellites is a bi-phase modulated pseudo random noise code ,we can use the C/A code to find the user location. In this paper,the generation principle and the circular correlation acquisition algorithm of C/A code are introduced.The generation of C/A code is implemented in the Matlab simulation environment,and simulation experiments is implemented to test the function of the acquisition algorithm , in which the initial phase and carrier frequency of C/A code is calculated successfully. The results prove the circular correlation acquisition algorithm is suitable for soft ware GPS receiver.