四通道单脉冲抗雷达诱饵干扰技术研究

在常规单脉冲角跟踪雷达技术的基础上，增加一个在方位向、俯仰向均含有零深的差接收波束，将为单脉冲角跟踪雷达对抗波束主瓣干扰提供一种可能途径。文中首先介绍了利用四通道单脉冲技术对抗有源雷达诱饵干扰方法的工作原理，并进行了可行性分析。然后，重点探讨了利用不同差通道接收信号间的相位差信息对雷达诱饵进行角度跟踪的方法以及可能达到的角度跟踪性能。初步研究结果表明：该对抗诱饵干扰的方法不仅理论上是可行的，也具有较好的工程可实现性，而且在诱饵的雷达回波信号不可忽略的情况下仍然有效，因此，不失为雷达导引头对抗有源、无源雷达诱饵干扰的一种有效途径。

A Countermeasure to Radar Decoy Based on Four-channel Monopulse Technique

Adding a difference antenna beam that has nulls in both azimuth and elevation on the basis of a traditional monopulse system will provide a possible approach for nulling of mainbeam jammers. The working principle of using four-hannel monopulse to counter radar active decoy is introduced, and its feasibility is analyzed. Then a method that using the phase difference between two different channels to realize angle tracking of radar active decoy is presented. At last its tracking performance is analyzed. The preliminary result shows that it is not only feasible in both theory and engineering, but also effective in the condition that the radar decoy return is not negligible. So four-hannel monopulse is believed to be an effective approach for countering radar active decoy.