AN/AAR-44B Infrared Warning Receiver

Multi-threat capabilities provide continuous tracking.

Do fighter jets have radar that will show and warn of a missile coming head-on, or do they only scan their tails? - Quora

Sensors, Free Full-Text

HENSOLDT MILDS – Missile Launch Detection Sensors

a) AAR-47 missile warning system;

Jet aircraft

Optical Warfare - The New Frontier

MWS Ir, PDF, Military Technology

AN/AAR-44B Infrared Warning Receiver

HENSOLDT's MILDS - Missile Launch Detection Sensors

Aircraft Warfare Systems

Marine One Anti-Missile Countermeasures 2