OVERVIEW: A Gun Director IR (Infrared) system is an electro-optical component of a fire-control system that enables passive target detection, tracking, and engagement using thermal imaging. It is primarily used for gun-based air and surface defense in low-visibility or night conditions.

GENERAL DESCRIPTION: These 3rd-generation systems combine cooled mid-wave or long-wave infrared sensors with high-resolution CCD video channels and eye-safe laser rangefinders. Designed for naval gunfire support and air defense, they allow passive target acquisition, automatic tracking, and fire-control cueing independent of radar emissions—vital in ECM-heavy or cluttered littoral environments. Integration with combat management systems enables rapid threat response and improved hit probability against air, surface, and shore targets.

ROLE SUMMARY:
Category: Electro-Optical Fire-Control Director
Primary Use: Multispectral gunfire direction under all-weather/day-night conditions
Function: Thermal/CCD imaging, laser ranging, and tracking
Platform: Naval vessels (corvettes to destroyers), some coastal or fixed air defense sites
Integration: Integrated with radar/EO fire-control networks and combat management systems

See Specific information under [Sensors/EW] section.

SOURCE:
Naval Technology: Electro-Optical Sensor Suites
https://en.wikipedia.org/wiki/Gun_director