基于Duffing振子的伪码调相线性调频复合调制引信干扰设计  

Design of pseudo-code phase modulation and LFM composite fuze interference based on Duffing oscillator

作　　者：闫晓鹏[1] 安泰 郝新红[1] 赵文龙 代健 YAN Xiaopeng;AN Tai;HAO Xinhong;ZHAO Wenlong;DAI Jian(Science and Technology on Electromechanical Dynamic Control Key Laboratory,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学机电动态控制重点实验室,北京100081

出　　处：《北京航空航天大学学报》2024年第11期3338-3347,共10页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学家基金(61973037);中国博士后科学基金(2022M720419)。

摘　　要：针对现代战场伪码调相与线性调频(LFM)复合调制引信干扰技术的迫切需求,在研究伪码调相与线性调频复合调制引信信号激励的Duffing振子输出信号特性的基础上,提出了基于Duffing振子阵列同步性和频率变化关系特性的复合调制引信参数估计方法,并在参数估计的基础上进一步提出了复合调制引信干扰波形的设计方案。在仿真与实验分析中,将基于Duffing振子的参数估计方法与典型复合调制引信信号参数估计方法进行对比,分析了基于所提参数估计方法重构出的干扰信号对复合调制引信的作用效果,并与传统欺骗式干扰方法进行半实物实验对比和验证。仿真与实验结果表明:所提参数估计方法在-35 dB信噪比(SNR)下能得到较高精度的参数估计结果,且重构出的引信干扰信号在-20 dB信噪比下优于其他传统的欺骗式干扰信号。This paper proposes a method of estimating the parameters of a composite modulation fuze based on the frequency variation relationship and synchronization of the Duffing oscillator array.This is done by studying the characteristics of the Duffing oscillator output signal that is excited by the signals of the pseudo-code phase modulation and the linear frequency modulation(LFM)composite modulation fuze in order to meet the urgent need for jamming technology in the modern battlefield.Further,this paper proposes a design scheme of jamming waveform of composite modulation fuze based on the parameter estimation method.The parameter estimate approach suggested in this research,based on the Duffing oscillator,is compared to the standard parameter estimation method of composite modulated fuze signal through simulation experiments.Then,the effect of the jamming signal reconstructed on the composite modulation fuze is theoretically analyzed,and the semi-physical experiment is carried out to verify and compare with the traditional deception jamming method.The experimental results show that the parameter estimation method proposed in this paper can still obtain high precision parameter estimation results under-35 dB signal-to-noise ratio(SNR),and the reconstructed fuze jamming signal is superior to the other traditional deception jamming signals under-20 dB SNR.

关 键 词：伪码调相与线性调频复合调制引信 DUFFING振子 参数估计 干扰 低信噪比 

分 类 号：TJ434.1[兵器科学与技术—火炮、自动武器与弹药工程]