Gps

GPS (Global Positioning System)

By akielb
  • Using Radio Waves to determine the poisitions of ships

    Using Radio Waves to determine the poisitions of ships

    1912: Reginald Fessenden experiments off the coast of Massachusetts with radio waves to determine the positions of ships.

  • Bearing from airfields

    Radio beacons were used to provide bearings from airfields

  • WWII Radio Navigation System

    WWII radio navigation systems were developed, the best known being LORAN or Long Range Aid to Navigation.

  • First Sputnik

    Soviet Union launched the first Sputnik. A team of U.S. scientists realized that if they knew their exact location on the globe, they could pinpoint where the satellite was along its orbit by measuring Doppler distortion.

  • Worldwide Navigation

    The Omega system provided worldwide electronic navigation coverage for the first time.

  • NAVSAT Was Developed

    U.S. Navy's NAVigation SATellite System (NAVSAT) was developed. First operational satellite positioning system using a six satellite constellation for worldwide coverage.
  • Clocks in Space

    Clocks in Space

    Timation satellite proved the ability to place accurate clocks in space.

  • Airforce

    The Air Force would operate the new system, which it called the Navstar Global Positioning System.
  • Block-I GPS

    Block-I GPS

    First Block-I GPS satellite launched.
  • Reagan announced the GPS system would be made available for Civilian

    Reagan announced the GPS system would be made available for Civilian

    President Reagan announced that the GPS system would be made available for civilian aviation uses once it was completed.

  • Accuracy and reliability

    Plans to upgrade GPS with two new civilian signals for enhanced user accuracy and reliability,

  • Block IIR-M is launched

    The first Block IIR-M is launched and the oldest satellite still in operation dates from Feb.1989.