Long Range Discrimination Radar

Common card · No. 328452

The Long Range Discrimination Radar (LRDR) in Alaska is part of the United States's Ground-Based Midcourse Defense anti-ballistic missile system. The main contractor is Lockheed Martin, under a US$784 million contract from the Missile Defense Agency in October 2015. LRDR is a gallium nitride (GaN)–based, solid-state active electronically scanned array (AESA) early-warning radar that allows for continuous coverage, even when it is undergoing maintenance. The radar consists of individual solid state radar blocks that can be combined to scale up the size of the radar. The multi-purpose GaN device used on the prototype version of the LRDR is from the Japanese electronics company Fujitsu, according to Lockheed Martin. Construction in Alaska for the LRDR was scheduled to begin in 2019, tentatively at Clear Space Force Station in central Alaska. Each AESA's dimensions are 60 feet (18 m) high by 60 feet (18 m) wide; the field of view is 220 degrees. In late February 2021, the Missile Defense Agency...

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