基于蒙特卡洛的大到暴雨条件下毫米波引信回波特性研究  

Research on Echo Characteristics of Millimeter-wave Fuze under Heavy Rainfall Conditions Based on Monte Carlo Method

作　　者：杨兵 武凯玮 梁彦斌 郝世钧 黄忠华[1] YANG Bing;WU Kaiwei;LIANG Yanbin;HAO Shijun;HUANG Zhonghua(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学机电学院,北京100081

出　　处：《兵工学报》2024年第S01期252-261,共10页Acta Armamentarii

摘　　要：为提高毫米波引信降雨环境适应性,研究降雨对毫米波信号的衰减和散射作用,建立降雨条件下毫米波调频引信回波信号数学模型,并基于蒙特卡洛方法对大到暴雨条件下引信回波信号进行仿真。仿真和实测结果表明:降雨后向散射信号以单峰形式存在于回波信号低频区,同时降雨将导致回波信号底噪大幅增加,大到暴雨条件下毫米波引信回波信号信噪比明显下降。实测数据中大到暴雨条件下35 GHz和60 GHz引信信噪比相对无雨条件平均下降了4.5 dB和6.3 dB,为毫米波引信的环境适应性带来挑战。所提建模方法及研究成果可为毫米波引信环境适应性设计提供理论依据。In order to improve the adaptability of millimetre-wave(MMW)fuzes to the rainfall environment,the attenuation and scattering effects of rainfall on MMW signals are investigated,a mathematical model of the echo signal of MMW FM fuze under rainfall conditions is established.The echo signal of the fuze under the conditions of heavy and storm rainfalls is simulated based on the Monte Carlo method.The simulated and measured results show that the rainfall backscattering signal exists in the form of a single peak in the low-frequency region of echo signal,while the rainfall leads to a significant increase in the bottom noise of echo signal,and the signal-to-noise ratio of millimetre-wave fuze echo signal under the conditions of heavy and storm rainfalls decreases significantly.In the measured data,the signal-to-noise ratioes of 35 GHz and 60 GHz fuzes under the conditions of heavy and storm rainfalls are decreased by 4.5 dB and 6.3 dB on average,respectively,compared with those under no rainfall condition,which poses a challenge to the environmental adaptability of millimetre-wave fuzes.The modelling method and research results in this paper can provide a theoretical basis for the design of millimetre-wave fuze with environmental adaptability.

关 键 词：毫米波引信 降雨衰减 散射 蒙特卡洛方法 

分 类 号：TJ434.1[兵器科学与技术—火炮、自动武器与弹药工程]