单脉冲雷达在多源环境中对目标的定位

在日益复杂的电子干扰环境下,提高精确制导武器的抗干扰能力一直是一个研究重点.针对单脉冲雷达跟踪目标过程中受到多源干扰这一背景,在多源信噪比未知情况下,提出一种利用某些先验信息对目标波束到达方向(DOA)进行估计的方法.这些先验信息包括噪声调频干扰信号(干扰带宽大于接收机带宽)经过匹配滤波后在围绕目标位置的各个距离分辨单元内都有信号输出以及雷达在跟踪目标过程中可获得目标信噪比.仿真结果表明,所提估计方法是有效的.

Study on the Target Location Under the Presence of Multiple-jamming Sources Using Monopulse Radar1

Under the more complicated interfering circumstances,an emphasis of research is to improve the capability of anti-jamming for precise control-and-guide weapons.An estimation method,which can get the direction-of-arrival(DOA) estimation of a target,is put forward with some prior information when the target tracking in a monopulse radar is interfered by multi-jamming sources with unknown Signal-Noise-Ratio.These prior information include that the signals in other range bins around the bin where the target return is present exist after noise chirping jamming signals(the jamming sources' band width is bigger than that of the receiver) pass through the matched filter and the target' SNR can be got by the tracking.The simulation results show the effectiveness of the proposed method.