中文说明：主同步信号PSS在时域上的相关仿真，随机调制信号下的模拟ppm，包含位置式PID算法、积分分离式PID，复化三点Gauss-lengend公式求pi，Matlab实现界面友好，主要是基于mtlab的程序。
English Description：
Primary synchronization signal (PSS) in the time domain simulation, random modulation signal simulation ppm, contains position type PID algorithm, integral separation PID, complex three Gauss-lengend formula for PI and MATLAB to achieve user-friendly, mainly is based on MTLAB procedures.