基于加伯变换和希尔伯特变换的信号调制识别方法

By combining the feature matrices of Garber transform and Hilbert transform with IQ-path data, and integrating deep learning networks, especially attention mechanisms, the performance bottleneck of traditional FSK signal recognition in complex environments has been solved, achieving efficient and accurate signal recognition.

CN120415974BActive Publication Date: 2026-07-17SICHUAN JIUZHOU SOFTWARE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN JIUZHOU SOFTWARE CO LTD
Filing Date
2025-06-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional FSK signal recognition methods are limited in time-frequency resolution under complex electromagnetic environments, feature extraction relies on experience, and have poor performance with low signal-to-noise ratio, making it difficult to adapt to the variability of FSK. Existing technologies do not fully utilize the synergistic advantages of Garber transform and Hilbert transform.

Method used

By combining the feature matrices extracted by the Discrete Garber Transform and Hilbert Transform with IQ-path data as input, signal recognition is performed through a deep learning network. In particular, an attention mechanism is introduced to improve feature fusion and noise resistance.

Benefits of technology

It significantly improves the recognition accuracy and robustness of FSK signals in complex environments, and enhances the adaptability and generalization ability to different modulation parameters.

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Abstract

本发明涉及信号处理技术领域,公开了基于加伯变换和希尔伯特变换的信号调制识别方法,包括:获取目标数字调制信号;对所述目标数字调制信号进行离散加伯变换,得到离散加伯变换特征矩阵;对所述目标数字调制信号进行希尔伯特变换,得到信号IQ路数据;将所述离散加伯变换特征矩阵和所述信号IQ路数据作为输入特征;对所述输入特征进行滑窗剪裁,得到K个目标预测样本;将所述K个目标预测样本输入至预先训练的信号类别识别网络,得到K个预测结果;对所述K个预测结果进行投票处理,以确定所述目标数字调制信号的类别。本发明能够显著提升识别准确率,有效抑制噪声,显著提高FSK信号在低信噪比和复杂电磁环境下的识别性能。
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