Proceedings PaperProgrammable Compensation Technique For Staring Arrays
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Nonscanned (staring) thermal imagers have many inherent performance advantages if the fixed-pattern noise caused by elemental nonuniformities can be compensated. Staring array systems are more efficient than mechanically-scanned FLIRS because all detector elements are always integrating photons from the scene, except during short readout periods. The successful application of staring arrays in imaging systems requires compensation of the elemental dark current and responsivity nonuniformities in real time. A novel approach to implementation of the compensation electronics has been developed using a microprocessor based system. The system is programmable to allow for applications to many types of staring sensors and system applications where other special functions are also needed. This unit has been demonstrated using simulated video noise and has shown compensation of array nonuniformities to better than 0.1 percent.