System Development & Application
|
3677-3680

Application of entropy characteristics of Hilbert envelope spectrum in specific emitter identification

Yue Jiaying
Zheng Na'e
Jiang Chunqi
PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China

Abstract

As specific emitter identification belongs to unintentional modulation recognition, the information of which will be reflected in the envelope of signal. The requirement of the measurement accuracy is high and the dimension of the features is large for the feature extraction method based on time-frequency statistical parameters. Thus, this paper proposed a method based on entropy characteristics of envelope spectrum to solve above problems. It extracted the envelope spectrum from the signal by Hilbert method. Then, it obtained the Shannon entropy and exponential entropy characteristics of the envelope spectrum, while identified the emitters by combining with the variance of envelope. In the simulation experiment, it improved the accuracy significantly compared with features from power spectrum entropy. The signal recognition rate is above 80% at 3 dB for signals of QAM, ASK and signals with fewer frequency components. It shows that the algorithm is efficient and robust. In addition, being applied to the signal from FM handheld radios, the algorithm proposed possess the characteristic of practicability.

Foundation Support

电子信息系统复杂电磁环境效应国家重点实验室2018年度主任基金资助项目

Publish Information

DOI: 10.19734/j.issn.1001-3695.2019.08.0559
Publish at: Application Research of Computers Printed Article, Vol. 37, 2020 No. 12
Section: System Development & Application
Pages: 3677-3680
Serial Number: 1001-3695(2020)12-031-3677-04

Publish History

[2020-12-05] Printed Article

Cite This Article

岳嘉颖, 郑娜娥, 蒋春启. Hilbert包络谱的熵特征在辐射源个体识别中的应用 [J]. 计算机应用研究, 2020, 37 (12): 3677-3680. (Yue Jiaying, Zheng Na'e, Jiang Chunqi. Application of entropy characteristics of Hilbert envelope spectrum in specific emitter identification [J]. Application Research of Computers, 2020, 37 (12): 3677-3680. )

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  • Application Research of Computers Monthly Journal
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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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