7/28/2019 AN_AAR-47B(v)2 Electro-Optic Missile and Laser Warning System

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A premier aerospace and defense company www.atk.com

The AN/AAR-47 B(V)2 Missile Warning System (MWS) is an electronic warfare system designed to protect low/slow flying aircraft

against surface-to-air and air-to-air missiles. The MWS will detect a missile fired at the aircraft or a laser pointed at the aircraft.

Upon detection of the threat, the MWS will automatically provide an audio and visual sector warning to the pilot. At the appropriate

time, the MWS will automatically initiate countermeasures by sending a command signal to theAN/ALE-39,AN/ALE-40 orAN/ALE-

47 Countermeasures Dispensing Set.

ATK has demonstrated that the AN/AAR-47 B(V)2 can detect hostile fire for ammunition employing tracers with a miss distances

less than 100 meters.

Electro-Optic Missile and Laser Warning System

AN/AAR-4 7B(V)2

All A(V)2 Functions plus:

Improved MWS performance in all operational environments

Enhanced OFP for improved missile warning detection

Clutter level indication

Smart dispense capability

Hostile Fire Indication (HFI) of threats using tracers and RPGs

7/28/2019 AN_AAR-47B(v)2 Electro-Optic Missile and Laser Warning System

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A premier aerospace and defense company www.atk.com

User platforms: U.S. Navy & Marine Corps - AH-1W, UH-1N, CH-53D, HH/SH-60, P-3, C-130, CH-46, V-22

U.S. Air Force - C-5, C-141, C-17, MH-53J, C-130E/H, HC-130N/P

U.S. Army - DHC-7, MH-47E, MH-60

The system interfaces with the following equipment: Radar Signal Detecting SetAN/APR-39

Countermeasures Dispensing Set - AN/ALE-39, AN/ALE-40, or AN/ALE-47

Pilots Intercom

The AN/AAR-47A(V)2 MWS is relatively small and lightweight: Computer Processor (CP) is approx. 8x8x10 inches and weighs approx.16.25 lbs.

Control Indicator (CI) is approx. 2x5x6 inches and weighs approx. 2 lbs.

Optical Sensor Converters (OSC) are approx. 5x8 inches and weighs approx. 3.5 lbs each.

The system runs on 28 volts DC supplied from the aircraft.

Missile Warning Algorithm Discriminants Temporal - source signal level as a function of time (Intensity versus Time)

Spectral Bandpass - source signal level within restricted bandpass most sensitive to threats and insensitive to false

alarms.

Algorithms looking for an event and confirmation.

Approved for Public Release

Office of Security Review

Department of Defense

Reference Number SPR-08-677.272

For information contact: Terry ThamesATK Defense Electronics Systems

P.O. 4648

Clearwater, Florida 33758-4648

Work: (727) 572-2516

E-mail: Terry.Thames@ATK.com

AN/AAR-47 B(V)2 Missile Warning Set

Optical Sensor Converter (OSC) Computer Processor (CP) Control Indicator (CI)