Primary signal phase suppression technique based on mutual information improved variational mode decomposition

Jiaying Yue; Jianpeng Lu; Sheng Wang; Nae Zheng; Long Zhang; Yi Han

doi:10.1117/12.3006611

10 October 2023 Primary signal phase suppression technique based on mutual information improved variational mode decomposition

Jiaying Yue, Jianpeng Lu, Sheng Wang, Nae Zheng, Long Zhang, Yi Han

Author Affiliations +

Proceedings Volume 12799, Third International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023); 1279934 (2023) https://doi.org/10.1117/12.3006611
Event: 3rd International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023), 2023, Kuala Lumpur, Malaysia

Abstract

Specific emitter identification (SEI) identifies targets mainly by unintentional modulation of the signal. However, due to the high energy of the primary signal, once the primary signal changes, the recognition becomes less effective or even impossible using a feature database that is not updated. In this paper, we propose to use a mutual information improved variable mode decomposition (VMD) algorithm to suppress the primary signal phase of the transmitter. Furthermore, we simulate the feature extraction of the unintentional phase modulation of the transmitter signal and use support vector machine (SVM) for individual identification. The simulation results show that the algorithm improves the recognition rate by about 6% (0 dB) compared to the retained primary signal. The results demonstrate that our proposed phase suppression technique improves the adaptability and accuracy of individual identification of transmitters.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiaying Yue, Jianpeng Lu, Sheng Wang, Nae Zheng, Long Zhang, and Yi Han "Primary signal phase suppression technique based on mutual information improved variational mode decomposition", Proc. SPIE 12799, Third International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2023), 1279934 (10 October 2023); https://doi.org/10.1117/12.3006611

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KEYWORDS

Feature extraction

Modulation

Wavelets

Phase shift keying

Denoising

Modal decomposition

Signal processing

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