Ultraviolet filter for sun-blind photodetector modules used in the development of aircraft direction-finding systems for threat-bearing determination

We have performed a theoretical study of the effect of narrow-band filter specifications on the performance of flare-detection systems for protection against various threats at sun-blind wavelengths. An energy calculation was performed, and requirements were determined for the optimum filter parameters that will enable signal detection against a noise background under various usage conditions for the UV direction finder.