毫米波引信的锥旋运动建模及目标检测  

Modeling of Conical Rotation and Target Detection for Millimeter Wave Fuze

作　　者：魏英珍 李琦 韩壮志 刘光霞 WEI Yingzhen;LI Qi;HAN Zhuangzhi;LIU Guangxia(School of Electronic Information,Hebei University of Technology,Tianjin 300401,China;Department of Electronic and Optical Engineering,Army Engineering University Shijiazhuang Campus,Shijiazhuang Hebei 050003,China)

机构地区：[1]河北工业大学电子信息工程学院,天津300401 [2]陆军工程大学石家庄校区电子与光学工程系,河北石家庄050003

出　　处：《现代雷达》2025年第3期27-34,共8页Modern Radar

摘　　要：在炮弹攻击目标的过程中,由于锥旋运动的存在导致毫米波引信回波出现距离走动问题,无法准确测距,对炮弹攻击的准确性产生影响。为解决该问题,首先结合实际情况构建了弹头的锥旋运动模型并进行理论推导,得到影响距离走动的主要参数及锥旋引起的回波延时;然后通过将锥旋运动近似为匀减速运动实现相参积累和加速度补偿,并采用Keystone变换进行距离维的运动补偿;最后利用二维快速傅里叶变换实现测距。为了验证检测性能的准确性,采用蒙特卡洛实验进行分析。仿真结果表明,俯仰角、方位角及锥旋角对锥旋引起的距离走动均存在影响,采用Keystone变换的方法可以对存在的距离走动现象进行有效补偿。In the process of cannonball attacking target,the existence of conical rotation leads to the problem of distance travel of millimeter wave fuze echo,which can not be accurately ranging,and has an impact on the accuracy of cannonball attack.In order to solve the problem,the conical rotation model of warhead is constructed and deduced theoretically,and the main parameters affecting distance travel and echo delay caused by conical rotation are obtained.Then the conical rotation is approximated as uniformly decelerated motion to achieve coherent accumulation and acceleration compensation,and the Keystone transformation is used for distance dimension motion compensation.Finally,two-dimensional fast Fourier transform is used to achieve distance measurement.In order to verify the accuracy of the detection performance,Monte Carlo experiment is used for analysis.The simulation results show that the pitch angle,azimuth angle and conical rotation angle all have effects on the distance movement caused by conical rotation,and the Keystone transformation method can effectively compensate the existing distance movement phenomenon.

关 键 词：毫米波引信 锥旋运动 KEYSTONE变换 运动近似 

分 类 号：TN957.51[电子电信—信号与信息处理]