An Anti-deception Jamming Method for LFMCW Detector

WANG Mingwei;XIAO Zelong;GAO Wen;RONG Yingjiao

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (4) : 753-761. DOI: 10.3969/j.issn.1000-1093.2019.04.010
Paper

An Anti-deception Jamming Method for LFMCW Detector

  • WANG Mingwei1， XIAO Zelong1， GAO Wen1， RONG Yingjiao2
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Abstract

An anti-radio frequency storage and repeater jamming method is proposed for the millimeter wave linear frequency modulation continuous wave (LFMCW) detection system for subsonic bomb detection, which is based on high-resolution range profile, chirp Z transform (CZT) spectrum zooming algorithm and dynamic time warping (DTW) matching algorithm. The multi scattering center target echo model and the jamming signal model based on the digital radio frequency memory (DRFM) are analyzed in the LFMCW detection system. On the basis of the constant false-alarm rate detection, the target signal spectrum is zoomed by CZT, and the feature of target HRRP is extracted. DTW matching algorithm is used to distinguish between the real target and the jamming target. The simulated and experimental results show that the obstructions detection method based on CZT and DTW can effectively distinguish between the real target and the jamming target based on DRFM for subsonic bomb-borne millimeter wave LFMCW detector. Key

Key words

linearfrequencymodulationcontinuouswave / anti-deceptionjamming / high-resolutionrangeprofile / chirpZtransform / dynamictimewarping

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WANG Mingwei， XIAO Zelong， GAO Wen， RONG Yingjiao. An Anti-deception Jamming Method for LFMCW Detector. Acta Armamentarii. 2019, 40(4): 753-761 https://doi.org/10.3969/j.issn.1000-1093.2019.04.010

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