OVERVIEW: Laser Warning Receivers (LWR) are passive electro-optical sensors designed to detect and warn of laser emissions targeting platforms, enhancing survivability by alerting crews to potential laser-guided threats.

GENERAL DESCRIPTION: LWR systems detect laser radiation from targeting designators, rangefinders, and laser-guided weapons, providing early warning to air, land, and naval platforms. They operate across a broad range of laser wavelengths, typically within the near-infrared spectrum, to sense various laser threats. Upon detection, LWRs cue countermeasures or evasive actions to mitigate risk. Widely used from the 1970s onward, these systems are integral to modern electronic warfare suites and are installed on fighter aircraft, helicopters, armored vehicles, and naval vessels.

ROLE SUMMARY:
Category: Electronic Support Measures (ESM) / Laser Warning Receiver (LWR)
Primary Use: Detection and warning of laser targeting emissions
Function: Passive detection of laser radiation and threat alerting
Platform: Aircraft, ground vehicles, naval ships, helicopters
Integration: Interfaces with threat warning systems and countermeasures

See Specific information under [Sensors/EW] section.

SOURCE:
Jane’s Electronic Warfare Systems
Defense Technical Information Center (DTIC) Reports