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Radar emitter identification with bispectrum and hierarchical extreme learning machine

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Abstract

Radar Emitter Identification (REI) has been broadly used in military and civil fields. In this paper, a novel method is proposed for radar emitter signal identification, where the bispectrum estimation of radar signal is extracted and the recent hierarchical extreme learning machine (BS + H-ELM) is adopted for further feature learning and recognition. Conventional REI methods generally rely on the time-difference-of-arrival, carrier frequency, pulse width, pulse amplitude, direction-of-arrival, etc., for signal representation and recognition. However, the increasingly violent electronic confrontation and the emergence of new types of radar signals generally degrade the recognition performance. With this objective, we explore radar emitter signal representation and classification method with the high order spectrum and deep network based H-ELM. After extracting the bispectrum of radar signals, the sparse autoencoder (AE) in H-ELM is employed for feature learning. Simulations on four representative radar signals, namely, the continuous wave (CW), linear frequency modulation wave(LFM), nonlinear frequency modulation wave(NLFM) and binary phase shift keying wave (BPSK), are conducted for performance validation. In comparison to the existing multilayer ELM algorithm and the popular histogram of gradient (HOG) based feature extraction method are proved that the proposal is feasible and potentially applicable in real applications.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (61503104, 61502420), Hangzhou Smart City Research Center of Zhejiang/Zhejiang Smart City Regional Collaborative Innovation Center (GK150906299001/019), and the Natural Science Foundation of Zhejiang Province (LY16F020032).

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Authors and Affiliations

  1. School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China

    Ru Cao & Jiuwen Cao

  2. College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou, China

    Jian-ping Mei

  3. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Chun Yin

  4. Hypervelocity Aerodynamics Institute, China Aerodynamics Research & Development Center, Mianyang, 621000, China

    Xuegang Huang

Authors
  1. Ru Cao
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  2. Jiuwen Cao
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  3. Jian-ping Mei
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  4. Chun Yin
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  5. Xuegang Huang
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Correspondence to Jiuwen Cao.

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Cao, R., Cao, J., Mei, Jp. et al. Radar emitter identification with bispectrum and hierarchical extreme learning machine. Multimed Tools Appl 78, 28953–28970 (2019). https://doi.org/10.1007/s11042-018-6134-y

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  • DOI: https://doi.org/10.1007/s11042-018-6134-y

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