摘要
逆合成孔径雷达由于其独特的成像原理,具有比普通雷达更强的抗干扰能力。调频步进信号具有在保持瞬时带宽较小的同时通过合成宽带技术获得距离高分辨,降低系统实现的复杂度的优点,提出了一种基于时间延时的对调频步进信号体制成像雷达欺骗干扰方法,利用对调频步进雷达接收到的回波信号进行距离向延时和方位向延时后转发,从而合成假目标对调频步进频率ISAR进行欺骗干扰。仿真结果表明这种方法行之有效。
ISAR based on frequency-stepped chirp signal has greater capability of anti-jamming than that of the conventional radar due to its peculiar characteristic. Frequency-stepped chirp signal can achieve total large bandwidth while maintaining narrow instantaneous bandwidth, thus reducing the complexity of radar systems. A method of jamming the ISAR imaging is proposed, where the received signal is retransmitted after the time delay has been done on the cross-range and the range. Therefore the false targets can be constructed and the deception jamming against frequency-stepped ISAR is successfully accomplished. Simulations are given to validate the effectiveness of the proposed method.
出处
《火力与指挥控制》
CSCD
北大核心
2010年第7期25-28,共4页
Fire Control & Command Control
基金
国家自然科学基金(60971100)(60672032)
陕西省自然科学基础资助项目(2007F28)(SJ08F10)
关键词
电子对抗
线性调频步进信号
图像合成
假目标
欺骗干扰
electronic countermeasures
frequency-stepped chirp signal
image synthesis
false target
deception jamming
