| 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。 |
| 关键词: 地面防空雷达 电磁干扰 副瓣对消 抗干扰效能 |
| DOI：10.3969/j.issn.1001-893X. |
|
| 基金项目: |
|
| Application of Sidelobe Cancellation in Interference Suppression between Radars |
| LI Gui-yuan,ZHANG Hou,XU Hai-yang |
| (The Missile Institute, Air Force Engineering University, Sanyuan 713800, China) |
| Abstract: |
| In order to better suppress the electromagnetic interference(EMI) betwee
n ground radars, escort jamming mode is compared, the characteristic of EMI
signal coupling to receiver by antenna sidelobe is educed, sidelobe can
cellation is applied in suppressing the EMI between radars, the prin
ciple of sidelobe cancellation is analysed, and the weight coefficients are adju
sted adaptively by correlator and gain amplifier. Finally, the anti-interference
effectiveness of sidelobe cancellation is validated. Experiment results indicat
e that the anti-interference effectiveness is improved about 20.1dB, and sidelob
e cancellation can suppress the EMI between radars effectively. |
| Key words: ground air defense radar electromagnetic interference(EMI) sidelobe cancellation anti-interference effectiveness |
《电讯技术》编辑部 