Extraction of Weak Harmonic Target Signal from Ionospheric Noise of High Frequency Surface Wave Radar

Xiaolong ZHENG; Bangjie LI; Daqiao ZHANG; Di YAO; Xuguang YANG

doi:10.1587/transfun.2023EAL2074

Regular Section

Extraction of Weak Harmonic Target Signal from Ionospheric Noise of High Frequency Surface Wave Radar

Xiaolong ZHENG, Bangjie LI, Daqiao ZHANG, Di YAO, Xuguang YANG

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Keywords: high frequency surface wave radar, radar signal processing, ionospheric clutter, chaotic noise

JOURNAL FREE ACCESS

2024 Volume E107.A Issue 8 Pages 1360-1363

DOI https://doi.org/10.1587/transfun.2023EAL2074

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Abstract

High Frequency Surface Wave Radar holds significant potential in sea detection. However, the target signals are often surpassed by substantial sea clutter and ionospheric clutter, making it crucial to address clutter suppression and extract weak target signals amidst the strong noise background.This study proposes a novel method for separating weak harmonic target signals based on local tangent space, leveraging the chaotic feature of ionospheric clutter.The effectiveness of this approach is demonstrated through the analysis of measured data, thereby validating its practicality and potential for real-world applications.

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