中文说明： 通过虚拟阵元进行DOA估计，LCMV优化设计阵列处理信号，现代信号处理中谱估计在matlab中的使用，使用高阶累积量对MPSK信号进行调制识别，处理信号的时频分析，包括数据分析、绘图等等。
English Description：
DOA estimation is carried out by virtual array element, array processing signal is optimized by LCMV, spectrum estimation is used in MATLAB in modern signal processing, modulation identification of MPSK signal is carried out by using high-order cumulant, and time-frequency analysis of signal is processed, including data analysis, drawing, etc.