一种自适应雷达抗压制性欺骗干扰方法

压制性欺骗干扰兼具压制性噪声干扰和脉冲欺骗干扰的特点,使得传统的副瓣相消和副瓣匿影等抗干扰措施失效.本文提出了一种时空级联自适应雷达抗压制性欺骗干扰方法.该方法首先采用时域深加权的离散傅立叶变换(DFT)滤波,然后进行干扰样本的识别与收集.若判断出干扰为压制性欺骗干扰,则利用收集到的样本数据求取副瓣相消器的权矢量,从而自适应对消压制性欺骗干扰.甚至在一些干扰个数多于辅助通道数的场合下,也能有很好的对消效果.计算机仿真实验证明了该方法的有效性.

An adaptive method for radar against blanket deception jamming

Blanket deception jamming is characteristic of both blanking noise jamming and deception jamming,which cause some traditional anti-jamming measures invalid such as sidelobe canceling and sidelobe blanking and so on.In this work,an algorithm of time- space cascade adaptive sidelobe canceling based on jamming samples recognition is presented.The received data first pass through a deeply weighted Discrete Fourier Transformation filter in the time domain,and then the jamming samples are recognized.If the jamming samples can be concluded as the blanket deception jamming,they will be collected to compute the adaptive weight vector of the sidelobe canceller against the blanket deception jamming.Even in some cases when the number of jammings is more than that of assistant chan- nels,the suppression results is still very good.The computer simulations demonstrate the validity.