Based on it , the ica is studied under instantaneous mixtures and convolutive mixtures blind separation models . the main works are as follows : 1 . based on herault - jutten algorithm separating signals blindly , we obtain an algorithm using natural gradient under instantaneous mixtures model . the equivariance property has been discussed too 以此为基础,在盲信号分离的瞬时线性混合模型和卷积混合模型下,对独立分量分析算法进行了研究,主要工作如下: 1 .在瞬时线性混合模型下,详细讨论了改进h - j算法。