Next-Generation Overhead Persistent Infrared

Next-Generation Overhead Persistent Infrared (Next-Gen OPIR) is being developed in USA as the replacement for the current missile warning constellation, the Space-Based Infrared System (SBIRS).{{Cite web | url = https://breakingdefense.com/2024/05/next-gen-opir-2-steps-forward-1-step-back-for-missile-warning-effort/ | title = Next-Gen OPIR: 2 steps forward, 1 step back for missile warning effort | publisher = Breaking Defense| author = Theresa Hitchens | date = 2024-03-03 | access-date = September 19, 2024 | language = en}}

The Next-Gen OPIR satellites are engineered to detect and track ballistic missile launches, delivering early warnings of potential attacks. Equipped with advanced infrared sensors, these satellites identify the heat signatures of incoming missiles and securely transmit this vital data to ground stations.{{Cite web | url = https://spacenews.com/lockheed-martin-secures-977-5-million-contract-extension-for-missile-warning-satellites/ | title = Lockheed Martin secures $977.5 million contract extension for missile-warning satellites | publisher = SpaceNews | author = Sandra Erwin| date = 2024-06-21 | access-date = 2024-09-20 | language = en}}

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