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  2. 1978

    The GPS project was started by the U.S. Department of Defense in 1973. The first prototype spacecraft was launched in 1978 and the full constellation of 24 satellites became operational in 1993.
    Country/ies of origin: United States
    Operator(s): US Space Force
    Status: Operational
    Type: Military, civilian
    en.wikipedia.org/wiki/Global_Positioning_System
    en.wikipedia.org/wiki/Global_Positioning_System
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  3. People also ask
    When was the first GPS satellite launched into space?The Air Force launched the first “Block I” GPS satellite into space in 1974. 1974 The branches of the military, after having worked on a GPS system for the past 11 years, launch the first satellite of a proposed 24-satellite GPS system called NAVSTAR. The satellite, and many to follow, are meant to test the NAVSTAR concept.
    When did GPs become operational?The 24 satellite system became fully operational in 1993. Today, GPS is a multi-use, space-based radionavigation system owned by the US Government and operated by the United States Air Force to meet national defense, homeland security, civil, commercial, and scientific needs.
    What was the first satellite navigation system?A terrestrial observer’s unknown location could be derived from the known orbit of a single satellite. That idea turned into the first satellite navigation system. In 1964, the Navy Navigation Satellite System (NNSS) became operational. The highly classified system called Transit was built to support the Polaris ballistic missile submarine fleet.
    When did the GPS system become secret?Front page of the seminal GPS system study performed from 1964 to 1966 by USAF 621B Program. Originally classified secret, it was not declassified until after the initial GPS satellite had been launched. This was the essential foundation to the GPS System design.
     
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