Sensitivity and resolution criteria for infrared cameras with array detectors and analysis for high speed computation requirements

Correlating field-test performance of IR imaging systems with minimum resolvable temperature difference (MRTD) values is discussed. Sensitivity and resolution theory of IR systems is reviewed. Systems can be characterized by three parameters: sensitivity, scan lines per object height, and channel capacity. Correlation problems are overcome by uncoupling sensitivity and resolution parameters. A comparison of the sensitivity and resolution parameters with the MRTD curves for two images of the same scene obtained with typical instruments validates the uncoupling approach.