Earth-centered, Earth-fixed coordinate system (source code)

= Earth-centered, Earth-fixed coordinate system
{wiki=Earth-centered,_Earth-fixed_coordinate_system}

The Earth-centered, Earth-fixed (ECEF) coordinate system is a three-dimensional Cartesian coordinate system that is fixed relative to the Earth. In this system, the origin is located at the Earth's center of mass, and the axes are aligned in a specific way to account for the Earth's rotation and shape.