WGS84süsteemis

The WGS 84 coordinate system, short for World Geodetic System 1984, is a standard used for geodetic control that defines the Earth's geometric shape. It is a geocentric Cartesian coordinate system, meaning the origin is at the Earth's center of mass. This system provides a reference frame for GPS and other positioning systems.

WGS 84 utilizes an ellipsoid of revolution, specifically a prolate spheroid, to approximate the Earth's shape. This ellipsoid has a semi-major axis (equatorial radius) of 6,378,137 meters and a flattening of 1/298.257223563. The coordinate system consists of three spatial coordinates: latitude, longitude, and altitude. Latitude measures the angle north or south of the equator, longitude measures the angle east or west of the prime meridian, and altitude is the height above the reference ellipsoid.

The WGS 84 system is crucial for global positioning and navigation. Its accuracy and widespread adoption by systems like GPS make it the de facto standard for geodetic referencing worldwide. Updates to the WGS 84 system, such as WGS 84 NIMA, have been released to improve its precision and account for subtle changes in the Earth's shape. Its global applicability ensures consistency in mapping, surveying, and location-based services.