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  2. A geographic coordinate system ( GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.

    • Geodetic Datum

      A geodetic datum or geodetic system (also: geodetic...

    • Decimal Degrees

      Decimal degrees (DD) is a notation for expressing latitude...

  3. A geographical coordinate system is a coordinate system. This means that every place can be specified by three sets of three numbers, called coordinates. A full circle can be divided into 360 degrees (or 360°); this was first done by the Babylonians; Ancient Greeks, like Ptolemy later extended the theory. Today, degrees are divided further.

  4. May 21, 2023 · Coordinate systems are frameworks that are used to define unique positions. For instance, in geometry, we use x (horizontal) and y (vertical) coordinates to define points on a two-dimensional plane. The coordinate system used to define locations on the three-dimensional earth is the geographic coordinate system (GCS), based on a sphere or spheroid.

  5. In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space. [1] [2] The order of the coordinates is significant, and they are sometimes identified by their position in an ordered tuple and sometimes ...

  6. A Geographic Coordinate System (GCS) is a type of coordinate system that enables every location on Earth to be specified by a set of numbers or letters. It is a system that uses latitude and longitude to define the positions of points on the surface of a sphere or an ellipsoid.

  7. en.wikipedia.org › wiki › GeodesyGeodesy - Wikipedia

    Definition. In English, geodesy refers to the science of measuring and representing geospatial information, while geomatics encompasses practical applications of geodesy on local and regional scales, including surveying .

  8. Browse dictionary. geographic coordinate system. [coordinate systems] A reference system that uses latitude and longitude to define the locations of points on the surface of a sphere or spheroid. A geographic coordinate system includes a datum, a prime meridian, and an angular unit of measure.