Comparative Analysis of 300 GHz and 79 GHz Radar Performance in Fire Environments

This paper presents an experimental comparative study of the propagation of microwave signals in the frequency ranges of 300 GHz and 79 GHz through fire. The operation of Low Terahertz imaging radar was investigated in various real scenarios, including fire with strong flame, dense smoke, and water vapor. The ability of Low Terahertz radar to ensure visibility of objects in fire environments was proven. In all scenarios, radar signal absorption was measured and in the case of steam was compared with theoretical calculations; the results are in good agreement. The analysis of the experimental results allows us to conclude that there are good prospects for Low Terahertz radar in the field of firefighting equipment for vision and navigation.