The thermal imaging system's function is to produce a picture that is a map of temperature difference related to spatial flux and emissivity differences across an extended target.
In this thesis, the fabrication and characterization of thermal imaging system made by using $128\times1$ MWIR HgCdTe infrared detector chip was fulfilled. Output signal of infrared detector chip was amplified to convert smaller analog signal to digital signal using high speed 12 bit AD converter and off-board ADC was used to obtain low noise thermal image, then thermal sensitivity was improved. New type scanner was adopted to realize the thermal imaging system operating in high frame rates. Computer used for signal processing. Thermal imaging system was characterized by measuring Noise Equivalent Temperature difference (NETD) and Minimum Resolvable Temperature Difference (MRTD).
