About

It is widely used in a variety of applications, including navigation, surveying, and mapping. The system was developed by the United States Department of Defense and the National Geospatial-Intelligence Agency to replace the previous reference system called WGS72. WGS84 is based on a mathematical model that defines the shape and size of the Earth, known as an ellipsoid, as well as the orientation and location of reference points on the Earth's surface. This reference frame is regularly updated to account for changes in the Earth's shape and rotation. The accuracy and consistency of WGS84 make it an essential tool for global positioning and the exchange of geographic information.