OVERVIEW: Target Designation Sights (TDS) have been employed from the 1950s onward to visually designate and cue weapon systems toward air, land, or sea targets. These optical-electronic systems are used on aircraft, naval vessels, and ground vehicles for directing fire or guiding sensors.

GENERAL DESCRIPTION: A Target Designation Sight (TDS) is a manually or electronically controlled optical aiming device designed to locate and designate targets for engagement. TDS units often include telescopic optics, reticles (fixed or adjustable), azimuth/elevation control, and sometimes basic stabilization. Later generations incorporated laser pointers or cueing interfaces for automatic weapons or sensor slaving. They serve as initial target acquisition aids prior to radar lock, guided weapon handoff, or EO sensor tracking.

ROLE SUMMARY:
Category: Optical/Electro-Optical Targeting Device
Primary Use: Visual target acquisition and cueing
Function: Designates targets for weapons or sensors
Platform: Aircraft, naval platforms, armored vehicles
Integration: Can slave turrets, radars, or fire-control systems

See Specific information under [Sensors/EW] and [Properties] sections.

SOURCE:
NATO Fire-Control System Handbooks (1950s–1990s)
Soviet/Russian Targeting Optic Catalogs