Long Range Discrimination Radar

Service And Conflict Use

1. May 22, 2015

   Planned Alaska site announced

   The Department of Defense announced a planned LRDR deployment in Alaska and said the radar was expected to begin defensive operations in 2020.

   Sources: Department of Defense Identifies Planned Site of Future Long Range Discrimination Radar (LRDR)

2. Dec 6, 2021

   Initial fielding ceremony in Alaska

   The Missile Defense Agency held the initial fielding ceremony for LRDR at Clear Space Force Station, marking the radar's transition into fielding and test operations.

   Sources: Initial Fielding of Long-Range Discrimination Radar in Alaska

3. Apr 22, 2024

   Transitioned to the Missile Defense Agency

   Lockheed Martin said LRDR completed DD250 final acceptance and was handed over to the Missile Defense Agency ahead of the operational-capability decision process.

   Sources: Lockheed Martin Successfully Transitions Long-Range Discrimination Radar to the Missile Defense Agency

4. Dec 4, 2025

   Operational acceptance

   U.S. Space Force Combat Forces Command took operational acceptance of LRDR after MDA completed the operational trial period.

   Sources: Combat Forces Command Long Range Discrimination Radar (LRDR) operational acceptance

Long Range Discrimination Radar Images

Related Weapon Systems

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Air DefenseSentinel A4Air and missile defense radarLockheed Martin's AN/MPQ-64A4 Sentinel A4 is a U.S. Army trailer-mounted air and missile defense radar. It replaces Sentinel A3 with a digital X-band AESA sensor that detects cruise missiles, UAS, fixed-wing and rotary-wing aircraft, and rocket, artillery, and mortar threats while feeding Army air-defense networks.

Air DefenseTPY-4Ground-based multi-mission air-surveillance radarLockheed Martin's TPY-4 is a U.S. ground-based, multi-mission air-surveillance radar for the 3DELRR program. The fully digital software-defined radar can be fielded in fixed or highly mobile configurations, detects smaller and harder-to-track targets in contested RF environments, and is transportable by C-130, C-17, truck, rail, or helicopter.

Support EquipmentAIR6500 Joint Air Battle Management SystemIntegrated air and missile defence command-and-control systemAIR6500 is Australia’s Joint Air Battle Management System program, a Lockheed Martin Australia-led command-and-control architecture for integrated air and missile defence. Defence says Phase 1 provides the core IAMD architecture, with four CEA-built radars and an operator evaluation environment feeding the design.

Sources