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  2. 124th meridian east - Wikipedia

    en.wikipedia.org/wiki/124th_meridian_east

    The meridian 124° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Pacific Ocean, the Indian Ocean, Australia, the Southern Ocean, and Antarctica to the South Pole. The 124th meridian east forms a great circle with the 56th meridian west.

  3. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    In order to compensate for this gain, a GPS clock's frequency needs to be slowed by the fraction: 5.307 × 10 −10 – 8.349 × 10 −11 = 4.472 × 10 −10. This fraction is subtracted from 1 and multiplied by the pre-adjusted clock frequency of 10.23 MHz: (1 – 4.472 × 10 −10) × 10.23 = 10.22999999543

  4. Decimal degrees - Wikipedia

    en.wikipedia.org/wiki/Decimal_degrees

    The designation of a location as, for example [54.1855,-2.9857] means that it is potentially computer searchable and that it can be located by a generally (open) referencing system such as Google Earth or OpenStreetMap. The location [54.1855,-2.9857] is that of a 2023 piece of land art 'Out of the ground, a thread of air' by Julie Brook.

  5. 125th meridian west - Wikipedia

    en.wikipedia.org/wiki/125th_meridian_west

    The meridian 125° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

  6. List of GPS satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_GPS_satellites

    Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...

  7. 124th meridian west - Wikipedia

    en.wikipedia.org/wiki/124th_meridian_west

    The meridian 124° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole. The 124th meridian west forms a great circle with the 56th meridian east.

  8. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    Vehicle navigation on a personal navigation assistant Garmin eTrex10 edition handheld. A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS).

  9. GPS watch - Wikipedia

    en.wikipedia.org/wiki/GPS_watch

    A GPS watch is a device with integrated GPS receiver that is worn as a single unit strapped onto a wrist, in the manner of a bracelet. The watch can have other features and capabilities depending on its intended purpose and be a smartwatch .