What does the Infrared Counter Measure Set (IRCM) create to deceive missiles?

The Infrared Counter Measure Set (IRCM) is designed to protect aircraft from incoming missiles that use infrared (IR) homing to track and target them. The system generates false IR signals, which are specifically crafted to confuse the missile’s infrared guidance systems. By emitting these deceptive signals, the IRCM misleads the missile away from the actual heat signature of the aircraft, effectively increasing the chances of evading a successful strike.

In contrast, the other options do not effectively address the needs of spoofing infrared-guided missiles. Loud noise is typically used for acoustic countermeasures, rather than infrared deception. A smoke screen does not alter the IR signature and can even obscure the aircraft instead of misleading a missile. Vibrational decoys may be used in some contexts but are not a standard feature of IRCM designed to deceive IR-guided missiles. Therefore, the creation of false infrared signals is the most effective and accurate means by which an IRCM can deceive missiles.