同频干扰是同型号雷达之间常见的一种互扰现象。为解决己方雷达造成的或敌方有意施加的同频干扰，提出利用脉宽捷变抑制同频干扰的方法，建立脉宽捷变抗同频干扰模型。对脉冲鉴别器处理流程进行优化，通过比较干扰脉冲脉宽与脉冲捷变信号脉宽，可有效地滤除同频干扰脉冲尤其是同频同步干扰信号。仿真结果表明：对不同幅度的、不同脉冲重复周期的同频干扰脉冲，通过脉宽捷变消隐法可以有效的将干扰信号从目标回波脉冲信号中滤除，满足雷达抗同频干扰的要求。
Co-frequency interference is a common mutual interference phenomenon between radars of the same type. In order to solve the co frequency interference caused by our radar or intentionally imposed by the enemy, the method of suppressing co frequency interference by using pulse width agility is proposed, and the anti co frequency interference model of pulse width agility is established. The processing flow of the pulse discriminator is optimized. By comparing the pulse width of the interference pulse with that of the pulse agility signal, the interference pulse with the same frequency, especially the synchronous interference signal with the same frequency, can be effectively filtered. The simulation results show that: for the same frequency jamming pulse with different amplitude and different pulse repetition period, the pulse width agile blanking method can effectively filter the jamming signal from the target echo pulse signal, and meet the requirements of radar anti-jamming at the same frequency.
2022,44(6): 121-124 收稿日期：2021-08-17
DOI：10.3404/j.issn.1672-7649.2022.06.024
分类号：TN957.51
作者简介：夏栋(1983-)，男，博士，讲师，研究方向为雷达抗干扰信号处理
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