文中介绍一种应用于极化切换相控阵雷达的抗主瓣干扰优化方法。极化切换雷达可以通过极化对消技术实现主瓣抗干扰能力。相较于传统双极化雷达,极化切换雷达电路系统设计更简单,成本更低。文中讨论了具有正交极化切换雷达的主瓣抗干扰优化方法,比如垂直极化和水平极化切换。根据干扰信号的极化特征,调整阵面不同极化区域比例,实现最佳的极化抗干扰能力。文中对三种不同比例的极化切换方法进行讨论,并对比了优缺点。均分方法最简单,成本较低,但抗干扰性能最差;最优化方法成本可控,但需要对干扰信号极化进行测量;部分双极化方法成本较高。

In this paper an optimal mainlobe anti-jamming method for polarization reconfigurable radar is proposed. The polarization reconfigurable radar has a certain mainlobe anti-jamming capability based on the polarization cancellation technology. Compared with the conventional dual-polarization radar, the polarization reconfigurable radar has lower cost and simpler circuit design. In this paper common orthogonal-polarization reconfigurable radar is discussed,whose antenna array can be reconfigured into two different polarizations,such as vertical polarization or horizontal polarization. The best anti-jamming ability can be achieved by adjusting reconfigured ratios according to the polarization characteristics of the jamming signals. Three methods with different reconfigured ratios are shown and discussed in this paper. Equal division method is simple and low-cost, but its anti-jamming ability is low. The optimize method is low-cost, but the polarization measurement of jamming signal is needed. The part dual-polarization method costs hig

TN957.51