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http://dx.doi.org/10.5515/KJKIEES.2010.21.11.1285

Feasibility Study of Forward-Looking Imaging Radar Applicable to an Unmanned Ground Vehicle  

Sun, Sun-Gu (Agency for Defense Development)
Cho, Byung-Lae (Agency for Defense Development)
Park, Gyu-Churl (Agency for Defense Development)
Nam, Sang-Ho (Samsung Thales)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.11, 2010 , pp. 1285-1294 More about this Journal
Abstract
This study describes the design and verification of short range UWB(Ultra Wideband) imaging radar that is able to display high resolution radar image for front area of a UGV(Unmanned Ground Vehicle). This radar can help a UGV to navigate autonomously as it detects and avoids obstacles through foliage. We describe the relationship between bandwidth of transmitting signal and range resolution. A vivaldi antenna is designed and it's radiation pattern and reflection are measured. It is easy to make array antenna because of small size and thin shape. Aperture size of receiving array antenna is determined by azimuth resolution of radar image. The relation of interval of receiving antenna array, image resolution and aliasing of target on a radar image is analyzed. A vector network analyzer is used to obtain the reflected signal and corner reflectors as targets are positioned at grass field. Applicability of the proposed radar to UGV is proved by analysis of image resolution and penetrating capability for grass in the experiment.
Keywords
Back Projection; Forward Imaging Radar; Synthetic Aperture Radar; Ultra Wideband; Vivaldi Antenna;
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Times Cited By KSCI : 1  (Citation Analysis)
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