Mar 10, 2024a geographic coordinate system defines two-dimensional coordinates based on the earth’s surface. A geographic coordinate system (gcs) is used to define locations on a model of the surface of the earth. The gcs uses a network of imaginary lines (longitude and latitude) to define locations.
A geographic coordinate system (gcs) uses a three-dimensional spherical surface to define locations on the earth. A geographic coordinate system is a reference framework used to define the location of features on the surface of the earth. Latitude and longitude, coordinate system by means of which the position or location of any place on earth’s surface can be determined and described.