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. Dec 29, 2008 this paper has deeply addressed and researched the main improvements of the current version iers conventions 2003, including the changes of the terrestrial reference system, the celestial reference system, and the transformation between them, the tide correction and so on, which would undoubtedly benefit the realization and maintenance of our. Iers conventions 2003 this document is intended to define the standard reference systems realized by the international earth rotation service iers and the models and procedures used for this purpose. The iers conventions centre, under the guidance of the iers conventions editorial board, is responsible for the maintenance of the iers conventional models, constants and standards. Impact of inconsistent use of iers conventions on ppp results. The astronomical unit of length is that length a for which the gaussian gravitational constant k takes the value 0. All of the products of the iers may be considered to be consistent with the description in this document. The computation models follow the iers 2003 conventions as closely as possible. This document is the result of continuous work involving the collaboration of tens of scientists, with progress re. Iers reference meridian wikimili, the free encyclopedia. It is the densest planet in the solar seestem an the lairgest o the fower terrestrial planets accordin tae radiometric datin an ither soorces o evidence, yird formed aboot 4. The astronomical unit of mass is the mass of the sun s.
All of the products of the iers may be considered to be. Yird, itherwise kent as the warld or the globe, is the third ben frae the sun an the anerly object in the universe kent tae herbour life. Wgs 84 implementation manual page i, 1998 iers conventions 2003. The international earth rotation and reference systems service. The second stage iau 2006 resolution b1 was the adoption of the p03 precession capitaine et al. The iers conventions 2003 was finalized in october 2003 as technical note 32. Scope the vrs conventions define the concept for the definition and realization of a global vertical reference system, which is consistent with the iers conventions 2003. Proceedings of the iers workshop on site colocation, 2005. Results of static and kinematic analyses are compared and investigated to quantify and qualify the impact of an inconsistent use oftheiersconventions.
The current issue of the iers conventions is called the iers conventions 2010. Front matter pdf, 48kb table of contents pdf, 71kb. As the convention is updated continually, users can obtain th e newest updated version and related fortran. Mccarthy, 1992 and iers conventions mccarthy, 1996. Background the relationship between an inertial reference frame and a terrestrial reference frame is complicated by the fact that the earth has several forced motions all of which are unpredictable at some level. Pdf the improvement and the effect of iers conventions 2003. Iers workshop on conventions, sevres 2021 september 2007 situation in the iers conventions 2003 chapter 4 4. Influence of dynamical equatorial flattening and orientation. The other three are mercury, venus, and mars the large mass of the sun makes earth move around it, just as the mass of earth makes the moon move around it. The equator, around the middle of earths surface, is about 40,075 kilometers or. Impact of iers conventions 2010 on vlbiderived reference. The current issue of the iers conventions is called the iers conventions 2003.
Y2000 using equations 23 in chapter 5 of the iers conventions 2003 or the relative fortran subroutines. A manual on the technical aspects of the united nations convention on the law of the sea 1982 pdf 4. Is there utility in rigorous combinations of vlbi and gps. Classical nutation angles, the celestial pole offsets in longitude and obliquity 2000, 2000, respectively, referred to the new model can be easily derived from. A complete set of files and associated software are available in the ftp archive, or can be downloaded as a tarball. Bureau international des poids et mesures us naval observatory iers conventions center.
Iers1996 and iers2000 subdaily erp model differences since january 2003 the iers has adopted a new set of conventions iers, 2000, including a new subdaily erp model, which is still supposed to be consistent with the iers1996 model, i. In the present work, the effects of the latest conventions released in 2010 on orbit propagation are investigated by comparison with cases of applying the previous guidelines, iers conventions 2003. Earth simple english wikipedia, the free encyclopedia. Different solutions with different level of inconsistency are generated and compared to a reference solution, which is. Iers conventions centre 1 us naval observatory usno 2 bureau international des poids et mesures bipm. The vrs conventions are based on the iers conventions 2003 mccarthy and petit, 2003 and are in agreement with resolutions of international scientific organisations.
Conventional terrestrial reference system and frame pdf. Replace the conventions 2003 define the standard reference systems realized by the iers along with the models and procedures used for this purpose the iers conventions 2010 3 since 2001, the bipm and the u. The updated version of the iers conventions is available as a working version at iers conventions center. Conventional terrestrial reference system and frame pdf 419 kb. Grace utcsr l2 proc standards doc rl 0006 csrgr12xx grace 327742 v 5. All parttime with parts ranging from small to very small. International laser ranging service ilrs home page. When referenced in recommendations and articles published in past years, this document may have been referred to as the iers conventions 2000. As the iers conventions 2003 adopts the iau2000 model, it also improves the solid earth tide model and frequencyrelated effect is m odeled better in order to be co nsistent with the new. Front matter pdf, 1kb table of contents pdf, 111kb introduction pdf, 343kb chapter 1.
Authors and major contributors of the previous 2003 version of the chapters may be found in the introduction to the conventions 2003. However, iers conventions 2010 neglects the contribution of a triaxial core because of. This paper presents the iers conventions 2010 the new reference edition replacing the conventions 2003 and describes their most significant features. The stations are included positions estimated in the weekly analysis if the number of observed lageos1 plus lageos2 ranges is greater than 10. Iers, and others, using inputs from vlbi, gps, and satellite laser ranging slr. Highfrequency variations that appear can be attributed in part to inaccuracy in the oceanic model, as was pointed out for earlier models by ponte et al. The iers conventions 2010 petit and luzum, 2011 is the new reference edition replacing the conventions 2003 mccarthy and petit, 2004. Iers workshop on conventions, sevres 2021 september 2007.
Iers conventions 2003 pdf, 1mb, not barrierfree file. All data analyses are assumed to follow the 2003 iers conventions mccarthy and petit 2004 as closely as possible so that common or equivalent models are applied. F, available from the iers conventions website, implements the model from table 8. Pdf iers conventions 2003 toshio fukushima academia.
Updates from the iers conventions 2003 to the iers conventions 2010. The iers con v en tions 2003 is a con tin uation of the series do cumen ts b egun with pro ject merit standards melb ourne et al, 1983 and con tin ued with the iers mccarth y, 1989. Glossary assembled, based verbatim on existing material. Data weighting is applied according to the analysts preference. The astronomical unit of time is a time interval of one day d of 86400 seconds. The 2010 reference edition of the iers conventions. Note that when referenced in recommendations and articles published in past years, this document may have been referred to as the iers conventions 2000. The iers conventions 2003 was finalized in october 2003, and the printed version is available as iers technical note 32. In iers conventions 2003 mccarthy and petit, 2004, the ocean tideinduced subdaily model of the polar motion consists of 71 tide components. Pdf this document is intended to define the standard reference systems realized by the international earth. Model absolute satellite and receiver antenna calibrations schmid et al. Provide a realization of itrs following iugg resolution 2 1991. Chapter 5 transformation between the celestial and terrestrial systems text of chapter 5.
Conventions 2010 based on mathews and bretagnon 2003. The improvement and the effect of iers conventions 2003 na w ei 1, chuang shi 2, min li 3, zou rong 4 gnss research center, w uhan university, 430072, hubei, china. Contribution of slr and llr to earth orientation and. The combined solution c04 for earth orientation parameters. Iris schneider international earth rotation and reference systems service central bureau bundesamt fur. International earth rotation and reference systems service iers. It is one of four rocky planets on the inside of the solar system.
Chapter 7 displacement of reference points version frozen on 6 october 2010, last updated 21 september 2010 see list of updates. The iers conventions center is preparing to release a new version of the iers conventions with an anticipated publication date of 2009. This code is an implementation of the solid earth tide computation found in section 7. After the completion of conventions 2003, work has started to prepare future updates. That model is based on the earlier work of ray et al. International earth rotation and reference systems service. Request pdf iers conventions 2003 this document is intended to define the standard reference systems realized by the international earth rotation. Lodr are lod where oceanic tides were removed according to the iers conventions 2003 model. The international earth rotation and reference systems service iers was established by. The core could also be a triaxial body, which will also contribute to the prograde polar motion getino et al. The improvement and the effect of iers conventions 2003.
The realization of the origin of the terrestrial reference. Also published in proceedings of the workshop and symposium celebrating a decade of the international gps service, astronomical institute, university of bern, switzerland. The iers conventions iers 2010 recommend the term itrf zero meridian for this plane, although the terms iers reference meridian and international reference meridian irm are also in use. The current iss ue of the iers conventi ons is called the iers conventions 2003 2. These guidelines are directly applied to model orbital dynamics of earth satellites. Recent and anticipated changes to the international earth. The reference systems and procedures of the iers are based on the resolutions of international scienti c unions. As earth spins around itself, the centrifugal force forces the equator out a little and pulls the poles in a little. This paper has deeply addressed and researched the main improvements of the current version iers conventions 2003, including the changes of the terrestrial reference system, the celestial reference system, and the transformation between them, the tide correction and so on, which would undoubtedly benefit the realization and maintenance of our. Iers t ec hnical notes that do cumen t ma jor c hanges, and it is exp ected that this do cumen t migh b e pro vided at appro ximately 5y ear in terv als.
A manual on the technical aspects of the united nations convention on the law of the sea 1982 pdf. The realization of the origin of the terrestrial reference system. Until recently, individual eop timeseries have been. Outline iers conventions 2003 2010 reference frames crf icrfext. The iers conventions 1996 was finalized as technical note 21. General definitions and numerical standards pdf, 302kb chapter 2. In the past there has been some confusion over comparison of models appearing in the iers conventions and the values published in the yoder et al. Contribution of gps to earth orientation monitoring. B c sutm fair summary the impact of inconsistent use of the iers conventions is assessed for ppp solutions. Conventions for the definition and realization of a.
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