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The ALQ-218 is mainly featured aboard the U.S. Navy's Boeing EA-18G Growler aircraft, [3] [4] which has replaced the EA-6B Prowler in the U.S. Navy. [5] The ALQ-218 was previously on the Grumman EA-6B Prowler, which the Improved Capability III ALQ-218 was modified and integrated into the EA-18G's Airborne Electronic Attack (AEA) system. [6]
The United States Air Force selected this radar for the 3DELRR programme (3-dimensional expeditionary long range radar) in February 2022. [5] The plan is to replace the TPS-75 with 35 AN/TPY-4(V)1 by 2028. [6] 2 ordered in April 2022 for USD $75.0 million. [7] 4 ordered in February 2023 for USD $84.9 million. [7]
The AN/ALQ-99 system on EA-6B Prowler Aircraft. The EA-6B in the foreground carries 3 under-wing jamming pods for transmitting and a single fixed pod on its tail for receiving. The ALQ-99 is an airborne integrated jamming system designed and manufactured by EDO Corporation. Receiver equipment and antennas are mounted in a fin-tip pod while ...
Prowler was based on the HS-376 satellite bus, developed by Hughes. It had a mass of around 1,300 kilograms (2,900 lb) and carried modifications to reduce its visibility to ground-based observers and to radar. [2] Following the satellite's retirement these modifications ceased to be effective, allowing it to be found by amateur observers. [3]
Diagram of AN/SPY-3 vertical electronic pencil beam radar conex projections. X band functionality (8 to 12 GHz frequency range) is optimal for minimizing low-altitude propagation effects, narrow beam width for best tracking accuracy, wide frequency bandwidth for effective target discrimination, and the target illumination for SM-2 and Evolved Sea Sparrow Missiles (ESSM).
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SPY-6 is intended as a scalable system, with each sensor array assembled from Radar Modular Assemblies (RMA), self-contained radar modules. [14] The Arleigh Burke deckhouse can only accommodate a 4.3 m (14 ft) version, but the USN claims they need a radar of 6.1 m (20 ft) or more to meet future ballistic missile threats. [8]
The AN/FPS-4 Radar was a Height-Finder Radar used by the United States Air Force Air Defense Command. MIT's Radiation Laboratory developed and produced the first version of this radar near the end of World War II. Zenith produced the A-model sets in the post-war period. The vertically mounted antenna was three feet wide and ten feet long.