供做算法研究人员参考，使用高阶累积量对MPSK信号进行调制识别，对信号进行频谱分析及滤波，三相光伏逆变并网的仿真，利用自然梯度算法。- Algorithm for researchers to do reference, Using high-order cumulants of MPSK signal modulation recognition, The signal spectral analysis and filtering, Three-phase photovoltaic inverter and network simulation, Use of natural gradient algorithm.