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在雷达电子对抗中,防止噪声干扰通过天线旁瓣进入雷达检测器是一种基本的措施。相干旁瓣对消是达到这一目的的有效方法。本文利用计算机模拟,对开环旁瓣对消进行了研究。如果在雷达视场中只有一个干扰源,采用一个辅助天线就可以对消从旁瓣进来的干扰。当有多个干扰源时、则需要相等数日的辅助天线。而且,这些辅助天线间的相对位置对于对消性能也有影响。
In radar electronic warfare, preventing noise from entering the radar detector through the antenna sidelobes is a fundamental measure. Coherent sidelobe cancellation is an effective way to achieve this goal. In this paper, computer simulation of open-loop sidelobe cancellation study. If there is only one source of interference in the field of view of the radar, the use of a secondary antenna will cancel the interference coming in from the sidelobes. When there are multiple sources of interference, an auxiliary antenna of equal number of days is required. Moreover, the relative positions of these auxiliary antennas also have an effect on cancellation performance.