基于KFCM增量更新的无线电引信目标识别方法
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摘要
针对传统无线电引信在复杂电磁环境下作用效果较差的问题,以连续波多普勒引信为例,通过对引信检波输出信号频域的分析,提出一种基于熵的特征提取方法,并利用KFCM算法对信号进行分类识别。由于实际战场环境复杂且不可预测,其背景噪声强度与实验环境下存在差异,因此结合KFCM增量更新特性,使分类模型根据噪声强度变化而实时更新调整,从而达到更好的分类效果。实验结果证明,基于增量更新KFCM算法能显著提高不同信噪比下引信目标识别能力,将KFCM增量更新算法运用到无线电引信抗干扰能取得良好效果。
The complex electromagnetic environment is a great threat to radio fuze,taking continuous wave Doppler radio fuze for example,a method based on frequency entropy by analyzing the frequency domain characteristic fuze detection output signal is proposed.The KFCM algorithm is used for classifying and recognizing target signal and jamming signal.As the end trajectory characteristic of fuze determines the fact that the received jamming signal power increase rapidly and the signal-to-noise ratio gets worse.Thus,combined with the KFCM incremental update model,the classification model is adjusted in real time according to signal-to-noise ratio to get a better effect.The result of experiment indicate that the KFCM algorithm with incremental update has good effect on the classification and recognition of target signal at different signal-to-noise ratio,and it can effectively improve the ability of anti-jamming of radio fuze.
The complex electromagnetic environment is a great threat to radio fuze,taking continuous wave Doppler radio fuze for example,a method based on frequency entropy by analyzing the frequency domain characteristic fuze detection output signal is proposed.The KFCM algorithm is used for classifying and recognizing target signal and jamming signal.As the end trajectory characteristic of fuze determines the fact that the received jamming signal power increase rapidly and the signal-to-noise ratio gets worse.Thus,combined with the KFCM incremental update model,the classification model is adjusted in real time according to signal-to-noise ratio to get a better effect.The result of experiment indicate that the KFCM algorithm with incremental update has good effect on the classification and recognition of target signal at different signal-to-noise ratio,and it can effectively improve the ability of anti-jamming of radio fuze.
引文
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[11]Lin K P.A novel evolutionary kernel intuitionistic fuzzy C-means clustering algorithm[J].IEEE Trans Fuzzy Systems,2014,22(5):1074-1087.
[12]吴佳.FCM聚类及其增量算法的研究[D].长沙:长沙理工大学,2011:12-39.(Wu Jia.FCM clustering and research of its increment algorithm.Changsha:Changsha University of Science&Technology,2011:12-39)
[2]赵惠昌.无线电引信设计原理与方法[M].北京:国防工业出版社,2012.(Zhao Huichang.Principle and method of radio fuze design.Beijing:National Defense Industry Press,2012:34-75)
[3]李志强.连续波多普勒无线电引信目标信号识别方法研究[D].北京:北京理工大学,2014:7-28.(Li Zhiqiang.On recognition of target signal for CW Doppler radio proximity fuze.Beijing:Beijing Institute of Techonolgy,2014:7-28)
[4]郭云鹏,闫晓鹏,李泽,等.基于处理增益的连续波多普勒引信干扰效能分析方法[J].探测与控制学报,2017,39(5):20-25,30.(Guo Yunpeng,Yan Xiaopeng,Li Ze,et al.Analysis of CW Doppler fuze jamming performance based on processing gain.Journal of Detection and Control,2017,39(5):20-30)
[5]单剑锋,翟波.基于小波变换的无线电引信目标识别研究[J].弹箭与制导学报,2009,29(6):288-290.(Shan Jianfeng,Zhai Bo.Wavelet based target detection for radio fuze signal.Journal of Projectiles,Rockets,Missiles and Guidance,2009,29(6):288-290)
[6]张彪,闫晓鹏,栗苹,等.基于支持向量机的无线电引信抗扫频式干扰研究[J].兵工学报,2016,37(4):635-640.(Zhang Biao,Yan Xiaopeng,Li Ping,et al.Research on anti-frequency sweeping jamming of radio fuze based on support vector machine.Acta Armamentarii,2016,37(4):635-640)
[7]卢云龙,李明,陈洪猛,等.基于熵特征的DRFM有源欺骗干扰CFAR检测[J].系统工程与电子技术,2016,38(4):732-738.(Lu Yunlong,Li Ming,Chen Hongmeng,et al.CFAR detection of DRFM deception jamming based on entropy feature.Systems Engineering and E-lectronics,2016,38(4):732-738)
[8]Zhen J D.Pan H Y.Cheng J S.Rolling bearing fault detection and diagnosis based on composite multiscale fuzzy entropy and ensemble support vector machines[J].Mechanical Systems And Signal Processing,2016,85(10):746-759.
[9]钟珞,潘昊,封筠,等.模式识别[M].武汉:武汉大学出版社,2006:53-86.(Zhong Luo,Pan Hao,Feng Yun,et al.Pattern recognition[M].Wuhan:Wuhan University Press,2006:53-86)
[10]Zhang D Q,Chen S C.Clustering incomplete data using kernel-based fuzzy c-means algorithm[J].Neural Processing Letters,2003,18(3):155-162.
[11]Lin K P.A novel evolutionary kernel intuitionistic fuzzy C-means clustering algorithm[J].IEEE Trans Fuzzy Systems,2014,22(5):1074-1087.
[12]吴佳.FCM聚类及其增量算法的研究[D].长沙:长沙理工大学,2011:12-39.(Wu Jia.FCM clustering and research of its increment algorithm.Changsha:Changsha University of Science&Technology,2011:12-39)