基于Hilbert谱区域能量比的核爆与雷电电磁脉冲识别

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (3) : 163-166.

论文

基于Hilbert谱区域能量比的核爆与雷电电磁脉冲识别

祁树锋，李夕海，韩绍卿, 牛超, 冯军, 刘代志

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Discrimination of Nuclear Explosion and Lightning Electromagnetic Pulse Using Regional Energy Ratio of Hilbert Spectrum

Qi Shufeng, Li Xihai, Han Shaoqing, Niu Chao, Feng Jun, Liu Daizhi

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摘要

根据核爆和雷电电磁脉冲信号非平稳、非线性特点，采用Hilbert-Huang变换（HHT）方法对NEMP和LEMP信号进行了时频分析，发现二者Hilbert谱中的能量集中于一定的时间和频率范围内。基于以上分析和发现，本文提出基于Hilbert谱区域能量比特征，采用最近邻法则对二者进行了识别研究。实验结果表明，在Hilbert谱中适当选择两个区域，以所选区域的区域能量比作为特征对核爆和雷电电磁脉冲信号进行识别，平均识别率达到90％以上。

Abstract

In this paper, using Hilbert-Huang transform (HHT) analyses nuclear explosion and lightning electromagnetic pulse, for NEMP and LEMP signal having non-stationary and non-linear characteristic, discovered that the energy in Hilbert spectrum focus on certain time and frequency regions. Based on above analysis and discover, the regional energy ratio of Hilbert spectrum character is brought up, by which the discrimination of NEMP and LEMP is studied. The experiment result indicated that, using the nearest neighbor pattern classification, the average discrimination rate of NEMP and LEMP is over 90% based on regional energy ratio of Hilbert spectrum.

导出引用

祁树锋;李夕海;韩绍卿;牛超;冯军;刘代志. 基于Hilbert谱区域能量比的核爆与雷电电磁脉冲识别[J]. 振动与冲击, 2013, 32(3): 163-166

Qi Shufeng;Li Xihai;Han Shaoqing;Niu Chao;Feng Jun;Liu Daizhi . Discrimination of Nuclear Explosion and Lightning Electromagnetic Pulse Using Regional Energy Ratio of Hilbert Spectrum[J]. Journal of Vibration and Shock, 2013, 32(3): 163-166