A two color 64 x 64 staring HgCdTe infrared sensor was used to characterize the effects of background flux and focal plane temperature on system uniformity. The sensor consists of an infrared focal plane, Cassegrain telescope, and a 14 bit processor to provide offset and gain calibration and a 12 bit digital output. The data were taken on consecutive frames of video frame rates of 100 Hz. The twelve bit sensor output was stored on a high data rate recorder/reproducer allowing a slower data rate for the lower speed test station, thus allowing analysis of consecutive complete frames of data. This paper merely identifies the effects of these changing parameters - the analysis of the physical mechanisms which result in these characteristics and the modeling to be able to predict these effects will be conducted over the next year.
Joan Kerrigan, Joan Kerrigan,
"Dependence of staring sensor uniformity on background flux and focal plane temperature", Proc. SPIE 2075, Passive Sensors, 20750I (29 January 1992); doi: 10.1117/12.2300246; https://doi.org/10.1117/12.2300246