数学方法是部分子空间法，对信号进行频谱分析及滤波，多元数据分析的主分量分析投影，主要是基于mtlab的程序，各种kalman滤波器的设计，利用自然梯度算法，包括调制，解调，信噪比计算，包括主成分分析、因子分析、贝叶斯分析。- Mathematics is part of the subspace, The signal spectral analysis and filtering, Principal component analysis of multivariate data analysis projection, Mainly based on the mtlab procedures, Various kalman filter design, Use of natural gradient algorithm, Includes the modulation, demodulation, signal to noise ratio calculation, Including principal component analysis, factor analysis, Bayesian analysis.