反向交叉眼干扰特性建模与仿真分析

摘要

With the development of technology,cross-eye jamming becomes more practical.Retrodirec-tive cross-eye and non-retrodirective cross-eye are studied in order to develop anti-jamming technology.The mathematical models of monopulse radar’s sum signal and difference signal under cross-eye jamming are es-tablished.The characteristics of sum signal and difference signal are simulated.The results show that,retro-directive cross-eye jamming does not affect the shape of the sum channel response,and non-retrodirective cross-eye causes sum beam to have zero point.Both retrodirective cross-eye and non-retrodirective cross-eye lead to the distortion of difference beam shape,and cause the monopulse ratio abnormal.The distance be-tween the jamming source and monopulse radar is closer,cross-eye decoy ability is stronger,and the abnor-mal angle range is larger.%随着技术水平的发展，交叉眼干扰技术变得更加实用。为开展其对抗技术研究，分别对反向交叉眼和非反向交叉眼进行了研究，对单脉冲雷达在交叉眼干扰环境下的和、差接收信号进行了数学建模，并通过仿真计算分析了和、差接收信号所表现出的特征。结果表明：反向交叉眼干扰不会影响和通道响应的形状，而非反向交叉眼干扰会导致和波束出现零点；反向交叉眼和非反向交叉眼干扰都会导致单脉冲雷达差接收波束方向图发生畸变，最终导致单脉冲比出现异常；干扰源与单脉冲雷达间的距离越小，交叉眼干扰的诱偏能力越强，单脉冲比出现异常的角度范围越大。