中文说明：现代信号处理中谱估计在matlab中的使用，抑制载波型差分相位调制，三相光伏逆变并网的仿真，IDW距离反比加权方法，搭建OFDM通信系统的框架，阵列信号处理的高分辨率估计。
English Description：
In modern signal processing, the use of spectrum estimation in MATLAB, suppression of carrier type differential phase modulation, simulation of three-phase photovoltaic inverter grid connection, IDW inverse distance weighting method, building the framework of OFDM communication system, high-resolution estimation of array signal processing.