ICA算法的研究可分为基于信息论准则的迭代估计方法和基于统计学的代数方法两大类，从原理上来说，它们都是利用了源信号的独立性和非高斯性。-ICA algorithm research can be divided into iterative estimation method based on information criterion and based on statistical algebraic methods into two categories, in principle, they are the use of the independence of the source signal and the non-Gaussian.