蔡氏电路组在微弱信号检测与参数测量中的应用  

Application of Chua’s Circuit Group in Weak Signal Detection and Parameter Measurement

作　　者：刘斌[1] 路清雅 范翔宇 李勃明 LIU Bin;LU Qingya;FAN Xiangyu;LI Boming(College of Joint Operations,National Defense University,Beijing 100091,China;China Academy of Aerospace System Innovation,Beijing 100088,China;Air Force Harbin Flight Academy,Harbin 150088,China)

机构地区：[1]国防大学联合作战学院,北京100091 [2]中国航天科技体系与创新研究院,北京100088 [3]空军哈尔滨飞行学院,黑龙江哈尔滨150088

出　　处：《信息工程大学学报》2025年第2期134-141,共8页Journal of Information Engineering University

基　　金：国家社会科学基金(2023-SKJJ-C-054)。

摘　　要：为降低对先验信息的依赖性,提升在低信噪比条件下的信号检测能力,同时有效刻画出信号的时频关系,利用蔡氏电路对噪声的强免疫性以及对信号初值的敏感性,构建蔡氏电路组并设计对应的信号检测方法。借鉴微积分思想,将复杂调制的待检测信号分割为多段短时线性信号,构建具有5个同步电路的蔡氏电路组,实现信号的高效检测和频率的精确测量。通过仿真实验,验证所提算法的有效性,并给出具有工程实践意义的仿真电路。To reduce the dependence on the prior information,improve the signal detection ability under the condition of low signal-to-noise ratio,and effectively describe the time-frequency relationship of the signal,the strong immunity of Chua’s circuit to noise and its sensitivity to the initial value of the signal are utilized to construct Chua’s circuit group,and to design the corresponding signal detection method.Drawing on the idea of calculus,the complex modulated signal to be detected is divided into multi-segment short-time linear signals,and Chua’s circuit group with five synchronous circuits is constructed.The efficient detection of the signal and the accurate measurement of the frequency are realized.Through simulation experiments,the effectiveness of the proposed algorithm is verified,and the simulation circuit with engineering practical significance is given.

关 键 词：微弱信号检测 参数测量 蔡氏电路 低信噪比 自适应 

分 类 号：TN911.23[电子电信—通信与信息系统]