对于初学者具有参考意义，验证可用，是一种双隐层反向传播神经网络，有PMUSIC 校正前和校正后的比较，基于分段非线性权重值的Pso算法，利用自然梯度算法，模式识别中的bayes判别分析算法，是小学期课程设计的题目。- For beginners with a reference value, Verification is available, Is a two hidden layer back propagation neural network, A relatively before correction and after correction PMUSIC, Based on piecewise nonlinear weight value Pso algorithm, Use of natural gradient algorithm, Pattern Recognition bayes discriminant analysis algorithm, Is the topic of the elementary school stage curriculum design.