摘要
A .J .Poelman等曾提出一种基于非线性极化变换的滤波方法 ,能有效提高极化滤波的抗干扰能力 ,但其算法随非线性程度的增加会变得越来越复杂 .为此本文提出一种单通道实数加权极化变换方法 ,该算法具有结构简单 ,易于硬件实现的特点 .文中给出按输出干扰最小为准则的极化滤波器的固有抗干扰能力只有 5 0 % ,即只能在极化域内滤除一半的干扰 ,当采用上述极化变换法后 ,根据信号极化状态的不同抗干扰能力可以提高到 5 7 7～ 10 0 % .
A nonlinear polarization vector translation method has been proposed by Poelman,which can effectively increases the interference suppression ability of the polarization filter.But the algorithm becomes more complicated as the nonlinear degree increases.Thus in this paper,a real weighting polarization vector translation method is put forward,which is simple and suitable for realizing in reality.It is shown that the intrinsic interference suppression capability of a polarization filter based on the rule of minimum interference output is only 50%.In other words,only half of the interference in polarization domain can be filtered out.By using the new method,the interference suppression capability of the filter is improved from 57 7% to 100% corresponding to different polarization states of the desired signal.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第3期69-72,共4页
Acta Electronica Sinica
关键词
极化滤波
抗干扰
极化损失
加权极化变化
polarization filtering
interference suppression
polarization mismatch loss
