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Compact 3D imaging radar based on FMCW driven frequency-scanning antennas

: Geibig, Thomas; Shoykhetbrod, Alex; Hommes, Alexander; Herschel, Reinhold; Pohl, Nils


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE Radar Conference, RadarConf 2016. Proceedings : Took place May 2-6, 2016 in Philadelphia, PA, USA
Piscataway, NJ: IEEE, 2016
ISBN: 978-1-5090-0863-6
ISBN: 978-1-5090-0864-3
5 pp.
Radar Conference (RadarConf) <2016, Philadelphia/PA.>
Conference Paper
Fraunhofer FHR ()

In this paper the development of a wearable 3D FMCW radar sensor system for firefighters to enhance eyesight in smoky surroundings during hazardous situations is described. In order to obtain a real-time capable, small and lightweight sensor, two orthogonal oriented frequency-scanning meander-line antennas are combined with small broadband 57 GHz to 63 GHz FMCW radar-modules. This arrangement is used to scan both directions, azimuth and elevation, in a fast time-multiplexed mode. The gathered time-domain datasets for both scanning directions are transferred to 2D projections. A following data-processing step merges both of these orthogonal images into a 3D-image of the monitored area. As no mechanical parts are involved, this very simple 2 Channel radar concept is suitable for a high degree of miniaturization. Integration of the whole system into a wearable system deployable for a broad field of applications in security and defense seems to be feasible.