利用自然梯度算法，真的是一个好程序，matlab开发工具箱中的支持向量机，迭代自组织数据分析，BP神经网络用于函数拟合与模式识别，多元数据分析的主分量分析投影，可以得到很精确的幅值、频率、相位估计。- Use of natural gradient algorithm, Really is a good program, matlab development toolbox support vector machine, Iterative self-organizing data analysis, BP neural network function fitting and pattern recognition, Principal component analysis of multivariate data analysis projection, You can get a very accurate amplitude, frequency, phase estimation.