AN/ALQ-144

The AN/ALQ-144 ( JETDS - name system ) is a system for defense against missiles with infrared homing heads. These are to be disturbed by specially modulated infrared emissions. It is located since 1980 in active service and is currently produced by BAE Systems. It is used almost exclusively by helicopter.

Description

The core element of the ALQ -144 is an electrically heated silicon carbide block, which when heated emits intense infrared radiation. This radiation is then provided with a special modulation. This is set so that when the modulation process in the IR seeker head of the missile approaching an incorrect target position is calculated. The weapon is so off course and represents no longer a threat

For the success of this method to a knowledge of the modulation schemes of enemy missiles is necessary, on the other hand is a powerful missile warning system of advantage, which as safely identifies the approaching missile (mostly based on the UV - signature) to determine the correct operating mode. Is it impossible to precisely identify various Störmodulationen be used in rapid succession. Emissions of ALQ 144 omnidirectionally in the horizontal plane, in the vertical, the radiation is limited by the upper cover and the airframe of the carrier platform. The basic version of a simple lock-in amplifier is used in order to achieve the required radiation power.

By 2003, more than 6,000 systems have been delivered, the main customer of the armed forces of the United States. Customers include 19 other countries, including Turkey, Israel, the Netherlands and the Republic of China.

Versions and platforms

• UH -60B, HH -60, MH -60
• UH -1H
• Mi-8 MT ( Mi-17 )
• Lynx
• AS 332 ( Cougar )
• SA 330 ( Puma)

• OH -58D
• OV -10

• AH -1F
• AH -1W
• AH -1Z

• AH -64
• A-109
• A-129

• VH -60, MH- 60R
• VH - 3D
• SH- 2F / G

• MH -60S

Specifications

• Weights: Transmitter: 12.5 kg
• Control panel: 0,45 kg