中文说明： 计算互信息非常有用的一组程序,利用最小二乘法进行拟合多元非线性方程，计算目标和海洋回波的功率谱密度,包含特征值与特征向量的提取、训练样本以及最后的识别，ML法能够很好的估计信号的信噪比,调试通过可以使用。
English Description：
A set of procedures for calculating mutual information is useful, using least square fitting nonlinear equation, calculating and sea echo Doppler power spectral density, contains the eigenvalues and eigenvectors of extraction, and, finally, the recognition of training samples, ML method can be a good estimation of the signal to noise ratio, debugging can be used.