直升机运动状态下雷达回波建模与微动特性分析  

Modeling of radar echoes of helicopter in motion state and analysis on its micro-motion characteristics

作　　者：龙铭 夏赛强 吕明久[1] 陈文峰[1] 杨军[1] LONG Ming;XIA Saiqiang;LYU Mingjiu;CHEN Wenfeng;YANG Jun(Air Force EarlyWarning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空天预警研究学报》2024年第2期79-84,95,共7页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

基　　金：国家自然科学基金资助项目(61671469)。

摘　　要：针对直升机常规雷达回波建模未考虑直升机运动时自身姿态变化对回波影响导致仿真结果与实际不符的问题,基于自由空间下旋翼叶片散射点回波模型,引入了多个参数矩阵和向量,实现直升机运动状态下雷达回波统一模型的构建.然后从理论上分析了在不同运动状态下,直升机回波微动特性变化.仿真结果验证了理论分析的正确性,表明运动状态变化对直升机雷达回波会产生影响.本文的研究对直升机目标识别及意图识别领域发展具有一定的价值.The conventional radar echo modeling of helicopter does not consider the effect of its own attitude change on the echoes when the helicopter moves,which results in the inconsistent simulation results with the reality.In order to solve the above problem,this paper is based on the scattering point echo model of rotor blades in free space,and introduces multiple parameter matrices and vectors to realize the construction of a unified radar echo model under helicopter motion,and then theoretically analyzes the variation of helicopter echo micro-motion characteristics under different motion states.The simulation results verify the correctness of the theoretical analysis,and show that the change of motion state will produce effect on the radar echo of helicopter.The study in this paper has certain value for the development of helicopter target recognition and intention recognition.

关 键 词：直升机运动目标 微动特征 意图识别 散射点模型 

分 类 号：TN95[电子电信—信号与信息处理] TP391[电子电信—信息与通信工程]