ALR-67 Radar Warning Receiver

The AN/ALR-67 is a digital radar warning system for fighter aircraft. It is produced by U.S. companies Raytheon and Northrop Grumman.

  • 2.1 AN/ALR-67 ( V) 2
  • 2.2 AN/ALR-67 (V) 3

Description

The ALR -67 was designed to warn pilots of fighter aircraft in time for a detection by radar systems. To this end, multiple antennas are distributed over the airframe of the aircraft carrier, to ensure a continuous monitoring of the air space. Typically, these are located at the wing edges and within the cockpit area. The system can detect and identify the radar radiation in the frequency range from 0.5 to 20 GHz. Reprogramming is also possible so that new radar systems can be identified.

Components

  • Four small helical antennas for high frequencies
  • Four broadband receiver for high and medium frequencies
  • A grouping of multiple antennas for low frequencies
  • A heterodyne receiver for signal analysis
  • Two main processors for digital signal processing
  • A screen in the cockpit including control unit

Variants

Note: The initial configuration of the ALR - 67 was almost completely with time by the ( V) 2 - displaces and (V) 3 variant.

AN/ALR-67 ( V) 2

This variant is since the 1990s, the primary radar warning system in the U.S. Navy and is manufactured by Northrop Grumman. It can be connected with various other systems, for example with the AGM -88 HARM to the radar control, the decoy AN/ALE-47 or EloGM - type systems AN/ALQ-126, -162 or -165. In addition, a connection provides in the ship's radar and communications systems for their trouble free operation. In this variant, new algorithms have been introduced over the previous version, which can provide precise coordinates, among other things, even under high g - load.

By July 2001, 2,100 units have been produced and delivered. These were exported in a variety of countries.

AN/ALR-67 (V) 3

The ALR -67 ( V ) 3 ( also known as "Advanced Special Receiver" ) is produced by Raytheon and represents a significant advancement of the (V ) 2 variant dar. So the old main processors were replaced by COTS derivatives of the G4 CPU. The original helical antennas were replaced by so-called " Integrated Antenna Detector " devices (AID), which can have a wider frequency range and monitor any polarizations (especially in the range of very high frequencies).

The system is manufactured from mid- 1999 series and currently used exclusively for the equipment of the F/A-18E/F Super Hornet, the system is also exported to Australia.

Platforms

  • F-14 Tomcat
  • F/A-18 Hornet
  • AV -8B Harrier II
  • P -3 Orion
Electromagnetic spectrum Bandwidth (signal processing) Electronic visual display Commercial off-the-shelf PowerPC G4 Grumman F-14 Tomcat Lockheed P-3 Orion
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