相参脉冲串复调制信号，IMC-PID是利用内模控制原理来对PID参数进行计算，单径或多径瑞利衰落信道仿真。- Complex modulation coherent pulse train signal, The IMC- PID is using the internal model control principle for PID parameters is calculated, Single path or multipath Rayleigh fading channel simulation.