RPCA-Based Radio Interference Cancellation Algorithm for Compact HF Surface Wave Radar

Di YAO  Aijun LIU  Hongzhi LI  Changjun YU  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E104-A    No.4    pp.757-761
Publication Date: 2021/04/01
Publicized: 2020/10/15
Online ISSN: 1745-1337
DOI: 10.1587/transfun.2020EAL2093
Type of Manuscript: LETTER
Category: Digital Signal Processing
compact HFSWR,  radio interference,  RPCA,  

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In the user-congested high-frequency band, radio frequency interference (RFI) is a dominant factor that degrades the detection performance of high-frequency surface wave radar (HFSWR). Up to now, various RFI suppression algorithms have been proposed while they are usually inapplicable to the compact HFSWR because of the minimal array aperture. Therefore, this letter proposes a novel RFI mitigation scheme for compact HFSWR, even for single antenna. The scheme utilized the robust principal component analysis to separate RFI and target, based on the time-frequency distribution characteristics of the RFI. The effectiveness of this scheme is demonstrated by the measured data, which can effectively suppress RFI without losing target signal.