Long Range Discrimination Radar (LRDR)

The Long Range Discrimination Radar is a gallium-nitride S-band solid-state phased-array radar fielded at Clear Space Force Station, Alaska, as a dedicated midcourse sensor for the Ground-based Midcourse Defense system. It closes a long-standing gap between the forward-based AN/TPY-2 radars and the Sea-Based X-Band Radar, letting the Missile Defense Agency discriminate lethal reentry vehicles from decoys at intercontinental ranges.

Lockheed Martin delivered the primary contractor acceptance in 2021 and Initial Fielding Decision followed in 2022, with the radar scheduled for full operational acceptance after integration with the Command and Control, Battle Management, and Communications (C2BMC) network. LRDR anchors the expanded MDA homeland defense architecture that will also include Hawaii's Homeland Defense Radar and the Next Generation Interceptor.

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