The Space-Based Infrared System (SBIRS) is a US Space Force defence system that seeks to enhance the United States’ capability in the areas of missile warning, missile defence and battlespace characterisation through satellites, sensors and related technologies. Under this programme, the fifth Space Based Infrared System Geosynchronous Earth Orbit Satellite was launched recently aboard an Atlas V launch vehicle. It will become a part of the US’ Overhead Persistent Infrared constellation.


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