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IEICE TRANSACTIONS on Communications

Radar Emitter Identification Based on Auto-Correlation Function and Bispectrum via Convolutional Neural Network

Zhiling XIAO, Zhenya YAN

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Summary :

This article proposes to apply the auto-correlation function (ACF), bispectrum analysis, and convolutional neural networks (CNN) to implement radar emitter identification (REI) based on intrapulse features. In this work, we combine ACF with bispectrum for signal feature extraction. We first calculate the ACF of each emitter signal, and then the bispectrum of the ACF and obtain the spectrograms. The spectrum images are taken as the feature maps of the radar emitters and fed into the CNN classifier to realize automatic identification. We simulate signal samples of different modulation types in experiments. We also consider the feature extraction method directly using bispectrum analysis for comparison. The simulation results demonstrate that by combining ACF with bispectrum analysis, the proposed scheme can attain stronger robustness to noise, the spectrograms of our approach have more pronounced features, and our approach can achieve better identification performance at low signal-to-noise ratios.

Publication
IEICE TRANSACTIONS on Communications Vol.E104-B No.12 pp.1506-1513
Publication Date
2021/12/01
Publicized
2021/06/10
Online ISSN
1745-1345
DOI
10.1587/transcom.2021EBP3035
Type of Manuscript
PAPER
Category
Fundamental Theories for Communications

Authors

Zhiling XIAO
  the Nanjing Research Institute of Electronics Technology
Zhenya YAN
  the Nanjing Research Institute of Electronics Technology

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