Geographic information - Referencing by coordinates (ISO 19111:2019)

This document defines the conceptual schema for the description of referencing by coordinates. It describes the minimum data required to define coordinate reference systems. This document supports the definition of: — spatial coordinate reference systems where coordinate values do not change with time. The system may: — be geodetic and apply on a national or regional basis, or — apply locally such as for a building or construction site, or — apply locally to an image or image sensor; — be referenced to a moving platform such as a car, a ship, an aircraft or a spacecraft. Such a coordinate reference system can be related to a second coordinate reference system which is referenced to the Earth through a transformation that includes a time element;