论文部分内容阅读
维纳滤波器作为一种预处理技术可以用于抑制强干扰与噪声。本文给出多通路系统的最优传输函数的解。用一个递推求逆矩阵的方法,可以求出有干扰时传输函数的表达式。同时给出系统增益的表达式。当干/信比趋于无限时,系统的渐近特性也可用显式表示出来。当不同通道的干扰除了相位畸变之外,在幅度上又受到调制时,系统增益可以在几种特殊情况下计算出来。本文给出了一些数值计算结果用于解释理论的分析。
Wiener filter as a preconditioning technique can be used to suppress strong interference and noise. In this paper, we give the solution of the optimal transfer function of multi-channel system. Using a method of recursion of the inverse matrix, one can find the expression for the transfer function with interference. At the same time give the expression of system gain. As the dry / signal ratio tends to infinity, the asymptotic properties of the system can also be explicitly expressed. When the interference of different channels in addition to the phase distortion, the amplitude modulation, the system gain can be calculated in several special cases. In this paper, some numerical results are given to explain the theoretical analysis.