标准编号：ISO 19161-1:2020
中文名称：地理信息 大地测量参考 第1部分：国际地面参考系统
英文名称：Geographic information — Geodetic references — Part 1: International terrestrial reference system (ITRS)
发布日期：2020-01
标准范围
This document 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.
This document:
— 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);
— describes different categories 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;
— categorizes procedures for realizing the ITRS.
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