通过虚拟阵元进行DOA估计，预报误差法参数辨识-松弛的思想，基于人工神经网络的常用数字信号调制，分析了该信号的时域、频域、倒谱，循环谱等,可以广泛的应用于数据预测及数据分析。- Conducted through virtual array DOA estimation, Prediction Error Method for Parameter Identification- the idea of relaxation, The commonly used digital signal modulation based on artificial neural network, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Can be widely used in data analysis and forecast data.