Research leading towards the continued improvement in resistor array infrared projector nonuniformity correction (NUC) is reported, particularly at low drive levels relevant to thermal imager and FLIR test and evaluation applications. Moire fringes have been successfully compensated, as has the checkerboard effect seen in earlier flood NUC measurements. With these improvements, the residual nonuniformity associated with the random spatial noise has been reduced successfully to the 0.1-0.2% rms level, equivalent to 20-60 mK noise equivalent temperature differences. The random noise is accompanied, however, by a low spatial frequency fixed pattern, currently unexplained but possibly attributable to busbar robbing in the electronic backplane.

Date Published: 30 April 2007
PDF: 12 pages
Proc. SPIE 6544, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XII, 654403 (30 April 2007); doi: 10.1117/12.718075

Published in SPIE Proceedings Vol. 6544:
Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XII
Robert Lee Murrer Jr., Editor(s)