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利用本文所述的抑制杂波与干扰的方法,可以极大地提高雷达接收机输入端的平均目标信号功率与平均无用信号功率之比。幅射的极化状态、目标后向散射场以及干扰场的作用,在本文称作收发天线极化状态虚拟自适应的技术中,都得到了考虑。这项技术可以用来补充频域与空域中的滤波技术。本文对于逻辑积型式的多凹口极化抑制滤波器的潜在优点给予了特别的注意。当要抑制的无用信号的极化状态不确定时,就可以应用这种滤波器。
The method of suppressing clutter and interference described in this article can greatly improve the ratio of the average target signal power to the average unwanted signal power at the input end of the radar receiver. The polarization state of the radiation, the target backscattering field, and the effect of the disturbing field are all considered in the technique described herein as virtual adaptation of the polarization state of the transmitting and receiving antenna. This technique can be used to supplement filtering techniques in the frequency and spatial domains. In this paper, special attention is paid to the potential advantages of the logically formatted multi-notch polarization rejection filter. This filter can be applied when the polarization state of the undesired signal to be suppressed is indefinite.