就一种基于非线性累加和的信号盲分离方法作了探讨。首先,文中针对方法中非线性函数特性对信号分离的影响从理论上作了分析,给出了加快迭代收敛的约束条件。接着,将该方法从无卷积混合信号分离的情况推广到混合卷积情形。最后通过数值模拟,给出了信号分离结果。 A blind separation method based on nonlinear summation is discussed. Firstly, the paper analyzes the influence of nonlinear function in the method on signal separation theoretically, and gives the constraints to speed up iterative convergence. Then, this method is generalized to the case of mixed convolution from the case of separating the mixed signal without convolution. Finally, by numerical simulation, the signal separation results are given.