摘要
为了更好地抑制地面雷达之间的电磁干扰,通过与随队干扰的干扰样式进行对比,得出了雷达间电磁干扰信号主要通过天线副瓣耦合进入接收机的特点,并在此基础上将副瓣对消技术引入到抑制雷达间电磁干扰中,分析了副瓣对消的基本原理,并采用相关器和增益放大器来自动调整权系数。最后对副瓣对消技术的抗干扰效能进行了验证,实验结果表明:采用副瓣对消技术后的雷达抗干扰效能提高了20.1 dB,可以有效地抑制雷达间电磁干扰。
In order to better suppress the electromagnetic iinterference（EMI） between ground radars, escort jamming mode is compared, the characteristic of EMI signal coupling to receiver by anterma sidelobe is educed, sidelobe cancellation is applied in suppressing the EMI between radars, the principle of sidelobe cancellation is analysed, and the weight coefficients are adjusted adaptively by correlator and gain amplifier. Finally, the anti - interference effectiveness of sidelobe cancellation is validated. Experiment results indicate that the anti - interference effectiveness is improved about 20. 1 dB, and sidelobe cancellation can suppress the EMI between radars effectively.
出处
《电讯技术》
北大核心
2010年第8期121-124,共4页
Telecommunication Engineering
关键词
地面防空雷达
电磁干扰
副瓣对消
抗干扰效能
ground air defense radar
electromagnetic interference （EMI）
sidelobe cancellation
anti - interference effectiveness
