The Defense Support Program (DSP) is a program of the United States Space Force that operated the reconnaissance satellites which form the principal component of the Satellite Early Warning System used by the United States. DSP satellites, which are operated by Mission Delta 4, detect missile or spacecraft launches and nuclear explosions using sensors that detect the infrared emissions from these intense sources of heat.
The Defense Support Program (DSP) is a program of the United States Space Force that operated the reconnaissance satellites which form the principal component of the Satellite Early Warning System used by the United States. DSP satellites, which are operated by Mission Delta 4, detect missile or spacecraft launches and nuclear explosions using sensors that detect the infrared emissions from these intense sources of heat.
Source: Wikipedia "Defense Support Program" · CC BY-SA 4.0
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