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  2. Comparison of free off-line satellite navigation software

    en.wikipedia.org/wiki/Comparison_of_free_off...

    Some of the free software mentioned here does not have detailed maps (or maps at all) or the ability to follow streets or type in street names (no geocoding). However, in many cases, it is also that which makes the program free (and sometimes open source [ 1 ] ), avoid the need of an Internet connection, [ 2 ] [ 3 ] [ 4 ] and make it very ...

  3. 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.

  4. Karta GPS - Wikipedia

    en.wikipedia.org/wiki/Karta_GPS

    Karta GPS is a mobile application developed by Karta Software Technologies Lda., a daughter company of NDrive, for the Android, iOS and iPadOS operating systems. It is distributed for free and pairs open-source map data from OpenStreetMap alongside curated content from Yelp and Foursquare .

  5. 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.

  6. State Plane Coordinate System - Wikipedia

    en.wikipedia.org/wiki/State_Plane_Coordinate_System

    One new feature will be a state-wide zone for projects that extend over more than one zone. [2] The NGS expects to release the new spatial reference system and new zones in 2025. [ 3 ] As with earlier systems, the name of the new system, State Plane Coordinate System of 2022, indicates a year earlier than the actual year of release.

  7. 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 ...

  8. Mapcode - Wikipedia

    en.wikipedia.org/wiki/MapCode

    The mapcode system was developed in 2001 by TomTom's Pieter Geelen and Harold Goddijn, [3] soon after the GPS satellite signals were opened up for civilian use. [4] It was decided to open source the system using Apache License 2.0 in 2008. The algorithms and data tables are maintained by the Mapcode Foundation, which provides source code and ...

  9. GPS satellite blocks - Wikipedia

    en.wikipedia.org/wiki/GPS_satellite_blocks

    GPS Block III is the first series of third-generation GPS satellites, incorporating new signals and broadcasting at higher power levels. In September 2016, the United States Air Force awarded Lockheed Martin a contract option for two more Block III satellites, setting the total number of GPS III satellites to ten. [ 22 ]