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http://dx.doi.org/10.6109/jkiice.2016.20.10.1860

Rotational Antenna based Clutter Imaging Algorithm in Helicopter Landing Mode  

Bae, Chang-Sik (Department of Electronics Convergence Engineering, Kwangwoon University)
Jeon, Hyeon-Mu (Department of Electronics Convergence Engineering, Kwangwoon University)
Kim, Jae-Hak (Ace Antenna Corp.)
Yang, Hoon-Gee (Department of Electronics Convergence Engineering, Kwangwoon University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.20, no.10, 2016 , pp. 1860-1866 More about this Journal
Abstract
Helicopter-related collision accidents with structures mostly occur at landing, especially in a limited visibility environment, which necessitates some secondary equipment like a radar that can generate stationary clutter image. In this paper, we propose an algorithm that makes an image of stationary ground clutter in two dimensional range and azimuth angle domain. We present a mathematical model for the received signals from each clutter patch in the iso range ring and analyze their clutter and Doppler characteristics, assuming that a helicopter-borne radar has a rotational antenna. We propose a filter structure, which suppresses side lobe signal components while extracting a main lobe signal component, and suggest a solution for a problem stemmed from the filtering process. Finally, by conducting a simulation we show the performance of the suggested imaging algorithm on a two dimensional virtual scenario of the topographic clutter.
Keywords
Helicopter-borne; Rotational antenna; Helicopter landing; Clutter Image;
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