Design and simulation of key module of DS-SS receiver in high dynamic
高动态下直扩接收机关键模块的设计与仿真*

High dynamic creats high Doppler shift to spread-spectrum signal and makes Pseudo-random code have a greater dynamic delay,which is likely to cause carrier tracking loop and code tracking loop out of lock.In order to improve the dyn-amic stress of the tracking loop and prevent tracking loop out of lock,this paper presented a design of the acquisition and tracking based on the analysis of the principle of the acquisition and tracking.MATLAB simulation results show the correctness of this design,and even if in a high dynamic conditions,this design can also have a precise and stable performance.