Information technology -- Spatial Reference Model (SRM)
This standard has been revised by ISO/IEC 18026:2009
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.