What is ISO 19161-1— International terrestrial reference system about?
ISO 19161-1 is the first part of an international multi-series standard that covers geographic information adopted by Geodetic references.
ISO 19161-1 provides the basic information and the requirements related to the International Terrestrial Reference System (ITRS), its definition, its realizations, and how to access and use these realizations. ISO 19161-1 describes ITRS following the definitions and terminology adopted by the International Union of Geodesy and Geophysics (IUGG), the International Association of Geodesy (IAG), and the International Astronomical Union (IAU). It categorizes procedures for realizing the ITRS.
ISO 19161-1 describes a different category of ITRS realizations: its primary realization, labelled the International Terrestrial Reference Frame (ITRF), other existing realizations of reference systems that are mathematically derived from the ITRS, and realizations that are aligned to the ITRF, such as GNSS-specific reference frames.
Who is ISO 19161-1— International terrestrial reference system for?
ISO 19161-1 on International terrestrial reference system (ITRS) is useful for:
- GIS Developer
- Conservationist
- Cartographer
- Environmental scientists
- Research institutions
- Climate Scientist
- City/ Urban area Planner
Why should you use ISO 19161-1— International terrestrial reference system?
The International Terrestrial Reference System (ITRS) creates a framework for the procedures to form the references that are suitable for use with measurements on or near the Earth's surface.
ISO 19161-1 provides the basic information and definitions related to the International Terrestrial Reference System (ITRS), its realizations, and how to access these realizations. These are consistent with the conventions adopted by the international scientific organizations that created this concept, which are the International Union of Geodesy and Geophysics (IUGG), specifically its association in charge of geodesy, the International Association of Geodesy (IAG), and the International Astronomical Union (IAU).
ISO 19161-1 describes the access methods to ITRS and the various processes required to determine positions expressed in this system. The various realizations of ITRS are then presented as crust-based reference frames, which are global, regional, or local, and as satellite ephemerides, such as those broadcasted by satellite navigation systems.
