International Earth Rotation and Reference Systems Service - en.LinkFang.org

International Earth Rotation and Reference Systems Service


International Earth Rotation and Reference Systems Service
The IERS logo
AbbreviationIERS
Websitewww.iers.org

The International Earth Rotation and Reference Systems Service (IERS), formerly the International Earth Rotation Service, is the body responsible for maintaining global time and reference frame standards, notably through its Earth Orientation Parameter (EOP) and International Celestial Reference System (ICRS) groups.

Contents

History


The IERS was established in its present form in 1987 by the International Astronomical Union and the International Union of Geodesy and Geophysics, replacing the earlier International Polar Motion Service (IPMS) and the Earth rotation section of the Bureau International de l'Heure (BIH). The service began operation on January 1, 1988. Since its inception, the IERS has established new bureaus including the GPS Coordinating Centre in 1990, the DORIS Coordinating Centre in 1994 and the GGF Coordinating Centre in 1998. The organization was formerly known as International Earth Rotation Service until 2003 when it formally changed its name to its present form, in which the organization chose to retain the acronym IERS.

Function


The IERS has various components located in the United States, Europe and Australia. Among its other functions, the IERS is responsible for announcing leap seconds.

The Sub-bureau for Rapid Service and Predictions of Earth Orientation Parameters of the IERS, located at the United States Naval Observatory, monitors the Earth's rotation. Part of its mission involves the determination of a time scale based on the current rate of the rotation of the Earth. Other services of IERS are at the Paris Observatory.

UT1 is the non-uniform time defined based on the Earth's rotation.

It defined the IERS Reference Meridian, the International Terrestrial Reference System (ITRS), and subsequent International Terrestrial Reference Frames (ITRF). Related coordinate systems are used by satellite navigation systems like GPS and Galileo: WGS84 and GTRF. The definitions and relationships among ITRF, ICRF and EOP are established by IERS conventions standards. As of 2018, the most recent convention is the IERS Conventions (2010).[1]

Earth orientation products


A mission of the IERS is to provide earth orientation information to the greater geodesy community in the form of bulletins:[2][3]

See also


References


  1. ^ "IERS Conventions Center" . IERS. Retrieved 22 January 2018.
  2. ^ "Earth Orientation Center" . Observatoire de Paris. Retrieved 2 August 2016.
  3. ^ "IERS Rapid Service/Prediction Center for Earth Orientation Parameters" . U.S. Naval Observatory. Archived from the original on 2 August 2013. Retrieved 2 August 2016.

External links










Categories: Standards organizations in France | Geodesy | Astronomy organizations | 1979 establishments in France | International organizations based in France | Organizations based in Paris








Information as of: 11.06.2020 02:39:26 CEST

Source: Wikipedia (Authors [History])    License : CC-by-sa-3.0

Changes: All pictures and most design elements which are related to those, were removed. Some Icons were replaced by FontAwesome-Icons. Some templates were removed (like “article needs expansion) or assigned (like “hatnotes”). CSS classes were either removed or harmonized.
Wikipedia specific links which do not lead to an article or category (like “Redlinks”, “links to the edit page”, “links to portals”) were removed. Every external link has an additional FontAwesome-Icon. Beside some small changes of design, media-container, maps, navigation-boxes, spoken versions and Geo-microformats were removed.

Please note: Because the given content is automatically taken from Wikipedia at the given point of time, a manual verification was and is not possible. Therefore LinkFang.org does not guarantee the accuracy and actuality of the acquired content. If there is an Information which is wrong at the moment or has an inaccurate display please feel free to contact us: email.
See also: Legal Notice & Privacy policy.