In this paper, we present a millimeter wave radar system which will enhance the performance of infrared cameras used for fire-fighting applications. The radar module is compact and lightweight such that the system can be combined with inertial sensors and integrated in a hand-held infrared camera. This allows for precise distance measurements in harsh environmental conditions, such as tunnel or industrial fires, where optical sensors are unreliable or fail. We discuss the design of the RF front-end, the antenna and a quasi-optical lens for beam shaping as well as signal processing and demonstrate the performance of the system by in situ measurements in a smoke filled environment.
Mathias Klenner, Christian Zech, Axel Hülsmann, Jutta Kühn, Michael Schlechtweg, Konstantin Hahmann, Bernhard Kleiner, Michael Ulrich, and Oliver Ambacher, "A portable W-band radar system for enhancement of infrared vision in fire fighting operations," Proc. SPIE 9993, Millimetre Wave and Terahertz Sensors and Technology IX, 999307 (Presented at SPIE Security + Defence: September 29, 2016; Published: 21 October 2016); https://doi.org/10.1117/12.2241063.
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