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解放军信息工程大学信息系统工程学院,河南 郑州 450001
[ "韩洁(1990-),女,河南郑州人,解放军信息工程大学博士生,主要研究方向为辐射源个体识别。" ]
[ "张涛(1977-),男,湖北天门人,博士,解放军信息工程大学教授,主要研究方向为辐射源个体识别、信息隐藏等。" ]
[ "王欢欢(1992-),男,河南永城人,解放军信息工程大学硕士生,主要研究方向为辐射源个体识别。" ]
[ "任东方(1993-),男,河南平顶山人,解放军信息工程大学硕士生,主要研究方向为特定辐射源个体识别。" ]
网络出版日期:2017-04,
纸质出版日期:2017-04-25
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韩洁, 张涛, 王欢欢, 等. 基于3D-Hibert能量谱和多尺度分形特征的通信辐射源个体识别[J]. 通信学报, 2017,38(4):99-109.
Jie HAN, Tao ZHANG, Huan-huan WANG, et al. Communication emitter individual identification based on 3D-Hibert energy spectrum and multi-scale fractal features[J]. Journal on communications, 2017, 38(4): 99-109.
韩洁, 张涛, 王欢欢, 等. 基于3D-Hibert能量谱和多尺度分形特征的通信辐射源个体识别[J]. 通信学报, 2017,38(4):99-109. DOI: 10.11959/j.issn.1000-436x.2017080.
Jie HAN, Tao ZHANG, Huan-huan WANG, et al. Communication emitter individual identification based on 3D-Hibert energy spectrum and multi-scale fractal features[J]. Journal on communications, 2017, 38(4): 99-109. DOI: 10.11959/j.issn.1000-436x.2017080.
针对通信辐射源的个体识别问题,提出一种基于希尔伯特—黄变换(HHT
Hilbert-Huang transform)和多尺度分形特征的新方法。首先,通过 HHT 得到时频能量谱,将其视为三维空间中的复杂曲面,即 3D-Hilbert能量谱;然后,利用分形理论通过多尺度分块提取差分盒维数和多重分形维数二维特征组成特征向量;最后,采用支持向量机分类器结合二维特征向量实现通信辐射源的个体分类。分别利用仿真信号和调制方式相同的实际通信信号,验证并对比了所提方法与另外2种方法在2类及3类目标情况下的识别性能。实验结果表明,所提方法的识别率远高于其他2种方法,能够克服低信噪比和少训练样本数量对识别性能的负面影响,证明了所提特征的稳定性、充分性及可分性。
For communication emitter identification
a novel method based on Hilbert-Huang transform (HHT) and multi-scale fractal features was proposed.First
the time frequency energy spectrum was derived via HHT
which was called a complicated curved surface in the three-dimension space
namely
3D-Hilbert energy spectrum.Then
the differential box dimension and the multi-fractal dimension was extracted to compose the feature vector under multi-scale segmentation using fractal theory.Finally
communication emitter individual identification was obtained using the two dimensions of features above and the support vector machine (SVM).Moreover
the novel method was compared with two existing methods to identify simulated and actual signals with different and the same modulation modes
respectively.Results show that the identification rate of the novel method is higher than that of the two other methods.The features extracted by the novel method have high stability
sufficiency
and identifiability
also outweigh the negative effects of the change of signal-to-noise ratio and the number of training samples and emitters.
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