Investigations in the performance models and their computer simulations are important links in thermal imaging technologies and provide the theoretical basis and analytical tcols for system design

analysis

verification and genesis of new concepts. It is deemed as a key subJect of investigations in various countries and a number of model versions have been successively presented in USA. As our national thermal imaging technologies are developing

investigations in this subject have advanced too. This paper reviews the state-of-art and progresses of the static performnace models of thermal imaging system at home and abroad

gives an analysis of the concepts adopted and the characteristics of technological proressing for several models

and points out the tendencies that deserve attention.