基于波形熵的异步窄脉冲干扰抑制

Method of Nonsynchronous Short-pulse Jamming Suppression Based on Waveform Entropy

反干扰设计已成为现代雷达设计的重要内容。异步窄脉冲干扰作为常见的干扰样式,具有较好的覆盖干扰效果。文中利用异步窄脉冲干扰在多个雷达脉冲回波之间呈现位置随机性的特点,提出基于波形熵的异步窄脉冲干扰抑制方法。该方法运算复杂度小,易于工程实现。对实录数据进行的处理结果表明了该方法的有效性。

Anti-jamming design has always been an important part of modern radar design. As a general jamming type, nonsynchronous short-pulse jamming has better effect of blanket jamming. With the characteristic that the position of nonsynchronous short-pulse jamming is random in radar echoes, a method of anti-non-synchronous short-pulse jamming based on waveform entropy is proposed in this paper. This method is of low computational complexity and easy for implementation. Experimental results using measured data show the validity of the method.