频率分集阵列的有源假目标鉴别方法
发布时间：2018-09-01 06:37
【摘要】：针对雷达对抗中转发式欺骗干扰的抑制问题,提出一种基于频率分集阵列的干扰鉴别方法。频率分集阵列中,目标回波在相邻阵元间产生的相位差与距离、角度呈线性关系,而假目标不满足该关系。对目标回波和多类假目标干扰在频率分集阵列接收端的相位差进行理论推导,详细分析匹配滤波、信号混合、移频等因素对相位差的影响,并给出了假目标鉴别的具体流程。理论分析及仿真结果表明,该方法能准确提取混合信号的相位差信息,有效对抗多种类型的转发式欺骗干扰,且鉴别性能对干信比、信噪比均不敏感,具有较强的环境适应性。
[Abstract]:Aiming at the suppression of forward spoofing jamming in radar countermeasure, a frequency diversity array based jamming discrimination method is proposed. In frequency diversity array, the phase difference and distance produced by the target echo between adjacent array elements are linear, but the false target is not satisfied with this relationship. The phase difference between target echo and multiple kinds of false target interference at the receiver end of frequency diversity array is theoretically deduced. The effects of matching filtering, signal mixing and frequency shifting on the phase difference are analyzed in detail, and the specific process of false target identification is given. The theoretical analysis and simulation results show that the proposed method can extract the phase difference information of the mixed signals accurately and effectively resist various types of forwarder spoofing interference. The discriminant performance is insensitive to the signal to signal ratio and signal-to-noise ratio and has a strong adaptability to the environment.
【作者单位】： 空军工程大学防空反导学院;
【基金】：国家自然科学基金资助项目(61501500)
【分类号】：TN974
本文编号：2216409
[Abstract]:Aiming at the suppression of forward spoofing jamming in radar countermeasure, a frequency diversity array based jamming discrimination method is proposed. In frequency diversity array, the phase difference and distance produced by the target echo between adjacent array elements are linear, but the false target is not satisfied with this relationship. The phase difference between target echo and multiple kinds of false target interference at the receiver end of frequency diversity array is theoretically deduced. The effects of matching filtering, signal mixing and frequency shifting on the phase difference are analyzed in detail, and the specific process of false target identification is given. The theoretical analysis and simulation results show that the proposed method can extract the phase difference information of the mixed signals accurately and effectively resist various types of forwarder spoofing interference. The discriminant performance is insensitive to the signal to signal ratio and signal-to-noise ratio and has a strong adaptability to the environment.
【作者单位】： 空军工程大学防空反导学院;
【基金】：国家自然科学基金资助项目(61501500)
【分类号】：TN974
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1 王浩,庄钊文,陈曾平;基于模糊方法的频率分集制雷达可靠性数学模型优化[J];电子产品可靠性与环境试验;1998年02期
2 V.曼格列斯;岳彩芬;;低角跟踪雷达的频率分集[J];国外舰船技术.雷达与对抗;1982年09期
，本文编号：2216409
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