Project 1424, ISO/IEC 18026:2006 - Information
technology - Spatial Reference Model (SRM)
ISO 18026:2005 specifies the Spatial Reference Model (SRM) defining relevant
aspects of spatial positioning and related information processing. The SRM
allows precise and unambiguous specification of geometric properties such
as position (location), direction, and distance. The SRM addresses the needs
of a broad community of users, who have a range of accuracy and performance
requirements in computationally intensive applications.