PM的一种常用的实现方法是用调制信号控制谐振回路或移相网络的电抗或电阻元件以实现PM。-Generation of time signal from wave spectrum (Jonswap,PM,etc.) and re-build wave spectrum.very good，you have look for best for your study!I hope help you to　the job

Simple program for time signal generation from wave spectrum, can be applied for oofshore eng. naval arch. student in model test.