FREQUENCY‐MODULATED CONTINUOUS‐WAVE (FM‐CW) RADAR FOR EVALUATION OF REFRACTORY STRUCTURES USED IN GLASS MANUFACTURING FURNACES

A frequency‐modulated continuous‐wave (FM‐CW) handheld radar operating in the frequency range of 8–18 GHz, resulting in a relatively fine range resolution was designed and constructed for on‐site inspection of refractory structure thickness. This paper presents the design of the radar and the results of measurements conducted on typical refractory furnace structures assembled in the laboratory.