利用极化滤波消除旁瓣对消器中目标效应

Elimination of Target Effects in Sidelobe Canceller Using Polarization Filter

为了消除旁瓣对消器中目标效应的影响,文中提出了辅助天线自适应极化滤波抑制目标信号的方法。辅助天线采用正交双极化通道接收,调整接收天线极化矢量与目标信号极化矢量正交,在极化域滤除进入辅助天线的目标信号,以提高辅助天线的干信比,从而提高旁瓣对消器的对消性能。仿真实验结果验证该方法的有效性。

To avoid the target effect in the sidelobe canceller,a method using adaptive polarization filter is proposed to suppress the target portion in the auxiliary antenna. The method uses two orthogonally polarized channels in the auxiliary antenna. By adjusting the receiving polarization vector of antenna to be orthogonal with that of the target signal, the target portion in the auxiliary antenna can be filtered in polarization domain. Thus the interference-signal ratio in the auxiliary antenna as well as the performance of the sidelobe canceller can be improved, Simulation experiment results prove the validity of the method.