添加噪声处理，基于人工神经网络的常用数字信号调制，到达过程是的泊松过程，一种流形学习算法（很好用），包括 MUSIC算法，ESPRIT算法 ROOT-MUSIC算法，是学习PCA特征提取的很好的学习资料。- Add noise processing, The commonly used digital signal modulation based on artificial neural network, Arrival process is a Poisson process, A fluid manifold learning algorithm (good use), Including the MUSIC algorithm, ESPRIT algorithm ROOT-MUSIC algorithm, Is a good learning materials to learn PCA feature extraction.