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  2. Military Grid Reference System - Wikipedia

    en.wikipedia.org/wiki/Military_Grid_Reference_System

    It’s also referred as 10-digit coordinates. An example of an MGRS coordinate, or grid reference, would be 4QFJ12345678, which consists of three parts: 4Q (grid zone designator, GZD) FJ (the 100,000-meter square identifier) 1234 5678 (numerical location; easting is 1234 and northing is 5678, in this case specifying a location with 10 m resolution)

  3. AN/PSN-13 Defense Advanced GPS Receiver - Wikipedia

    en.wikipedia.org/wiki/AN/PSN-13_Defense_Advanced...

    The Defense Advanced GPS Receiver (DAGR). Coordinates are for Rockwell Collins headquarters in Cedar Rapids, Iowa.. The AN/PSN-13 Defense Advanced GPS Receiver (DAGR; colloquially, "dagger") is a handheld GPS receiver used by the United States Department of Defense and select foreign military services.

  4. Projected coordinate system - Wikipedia

    en.wikipedia.org/wiki/Projected_coordinate_system

    Since, in the UK at least, a 6-figure grid reference identifies a square of 100-metre sides, an 8-figure reference would identify a 10-metre square, and a 10-digit reference a 1-metre square. In order to give a standard 6-figure grid reference from a 10-figure GPS readout, the 4th, 5th, 9th and 10th digits must be omitted, so it is important ...

  5. Global Area Reference System - Wikipedia

    en.wikipedia.org/wiki/Global_Area_Reference_System

    The Global Area Reference System (GARS) is a standardized geospatial reference system developed by the National Geospatial-Intelligence Agency (NGA) for use across the United States Department of Defense.

  6. United States National Grid - Wikipedia

    en.wikipedia.org/wiki/United_States_National_Grid

    The United States National Grid (USNG) is a multi-purpose location system of grid references used in the United States. It provides a nationally consistent "language of location", optimized for local applications, in a compact, user friendly format.

  7. World Geographic Reference System - Wikipedia

    en.wikipedia.org/wiki/World_geographic_reference...

    The GJ local grid. For example, on a GEOREF chart, Naval Air Station Patuxent River (38°17′10″N 76°24′42″W) / (38.286108, -76.4291704) is located (to the nearest minute) at position GJPJ3417. To locate the position from the coordinates, proceed as follows: Right from 180° longitude to longitude zone G

  8. BATCO - Wikipedia

    en.wikipedia.org/wiki/BATCO

    The authentication table converts a two digit challenge number into a two digit response. It is a 10 by 5 grid, also labeled horizontally and vertically with single digits. Each cell contains a random two digit number, with no repeated cells. A challenge is issued as a two digit number specifying the columns and row that selects a cell in the ...

  9. Cassini Grid - Wikipedia

    en.wikipedia.org/wiki/Cassini_Grid

    The Cassini Grid system was introduced in 1927 for maps of the United Kingdom for the British military. It is so called from the use of Cassini map projection. It modified and replaced a grid coordinate system first deployed in 1919 known as the British System. The Cassini Grid system is thus more properly called the Modified British System.