Thermal Radiation Detector (TRD) Modeling


This paper describes the theoretical principles of TRD operation based onthermal absorption of incident power of radiation. In the modelling procedures,the main parameters influencing on the detector features have been introduced. Sothe this model allow us to predict the behaviour of different types of thermaldetectors. It is found that the temperature response of the detector against thefrequency of incident radiation in logarithmic scale describes the TRD as a typicallow pass filter characteristics. The cut off corner frequency is found to be at 1 Hzunder which the temperature change attains a saturation value. In the sense that thethermal detector will detect all the incoming radiations of higher frequency.