The paper discusses some of the crtieria used to characterise the performance of thermal imaging systems and describes equipment which has been developed for their measurement. Particular attention is paid to the measurement of MRTD (minimum resolvable temperature difference) and recent work on an objective measurement technique is described.
T. L. Williams,
"Assessing The Performance Of Complete Thermal Imaging Systems", Proc. SPIE 0590, Infrared Technology and Applications, (1 May 1986); doi: 10.1117/12.951981; https://doi.org/10.1117/12.951981