False Image Suppression in Two-Dimensional Shape Estimates of a Walking Human Using Multiple Ultra-Wideband Doppler Radar Interferometers

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Author(s)

    • YAMAZAKI Hiroki
    • Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University
    • TAKI Hirofumi
    • Department of Electronic Engineering, Graduate School of Engineering, Tohoku University
    • SATO Toru
    • Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University

Abstract

Microwave systems have a number of promising applications in surveillance and monitoring systems. The main advantage of microwave systems is their ability to detect targets at distance under adverse conditions such as dim, smoky, and humid environments. Specifically, the wide bandwidth of ultra-wideband radar enables high range resolution. In a previous study, we proposed an accurate shape estimation algorithm for multiple targets using multiple ultra-wideband Doppler interferometers. However, this algorithm produces false image artifacts under conditions with severe interference. The present paper proposes a technique to suppress such false images by detecting inconsistent combinations of the radial velocity and time derivative of image positions. We study the performance of the proposed method through numerical simulations of a two-dimensional section of a moving human body, and demonstrate the remarkable performance of the proposed method in suppressing false image artifacts in many scenarios.

Journal

  • IEICE Transactions on Communications

    IEICE Transactions on Communications E99.B(1), 134-142, 2016

    The Institute of Electronics, Information and Communication Engineers

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