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  2. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    GPS receiver manufacturers design GPS receivers to use spectrum beyond the GPS-allocated band. In some cases, GPS receivers are designed to use up to 400 MHz of spectrum in either direction of the L1 frequency of 1575.42 MHz, because mobile satellite services in those regions are broadcasting from space to ground, and at power levels ...

  3. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    The United States' Global Positioning System (GPS) consists of up to 32 medium Earth orbit satellites in six different orbital planes. The exact number of satellites varies as older satellites are retired and replaced. Operational since 1978 and globally available since 1994, GPS is the world's most utilized satellite navigation system.

  4. eLoran - Wikipedia

    en.wikipedia.org/wiki/ELORAN

    By 2018, the United States planned to build a new eLoran system as a complement to and backup for the GPS system. The South Korean government has pushed plans to have three eLoran beacons active by 2019, which would be enough to provide accurate corrections for all shipments in the region if North Korea (or anyone else) tries to block GPS again.

  5. GPS week number rollover - Wikipedia

    en.wikipedia.org/wiki/GPS_week_number_rollover

    The GPS week number rollover is a phenomenon that happens every 1,024 weeks, which is about 19.6 years. The Global Positioning System (GPS) broadcasts a date, including a week number counter that is stored in only ten binary digits , whose range is therefore 0–1,023.

  6. Geolocation Privacy and Surveillance Act - Wikipedia

    en.wikipedia.org/wiki/Geolocation_Privacy_and...

    The GPS Act would effectively endorse the minority's position and establish that geolocational searches are presumptively unreasonable. [ 8 ] [ 9 ] However, this ruling does not provide full protection from geolocational tracking methods, such as those used by telecommunication companies who reserve the right to collect geolocational information.

  7. 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).

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  9. Wide Area Augmentation System - Wikipedia

    en.wikipedia.org/wiki/Wide_Area_Augmentation_System

    GPS offered a huge number of advantages to the pilot, combining all of an aircraft's long-distance navigation systems into a single easy-to-use system, often small enough to be hand held. Deploying an aircraft navigation system based on GPS was largely a problem of developing new techniques and standards, as opposed to new equipment.

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