Coordinate Systems - Revision history

Carlos.Lopez at 11:26, 23 February 2012

2012-02-23T11:26:24Z

← Older revision		Revision as of 11:26, 23 February 2012
Line 4:		Line 4:
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	~~\|Logo=gAGE~~
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Jaume.Sanz at 12:33, 24 January 2012

2012-01-24T12:33:41Z

← Older revision		Revision as of 12:33, 24 January 2012
Line 19:		Line 19:


	It is important to note the difference between Reference System and Reference Frame, two different concepts. The first one is understood as a ''theoretical definition'', including models and standards for its implementation. The second one is its ''practical implementation'' through observations and a set of reference coordinates, e.g. a set of fundamental stars, for a Celestial Reference Frame, or fiducial stations for a Terrestrial Reference Frame.		It is important to note the difference between Reference System and Reference Frame, two different concepts. The first one is understood as a ''theoretical definition'', including models and standards for its implementation. The second one is its ''practical implementation'' through observations and a set of reference coordinates, e.g. a set of fundamental stars, for a Celestial Reference Frame, or fiducial stations, for a Terrestrial Reference Frame.


	The ICRS was proposed by the IERS and formally accepted by IAU in 1997. A realization of the ICRS is the ICRF. On the other hand, IERS is in charge of defining, realizing and promoting the ITRS. Realizations of ITRS are the ITRFs, being the ITRF2005 the current reference realization of ITRS.		The International Celestial Reference System (ICRS) was proposed by the International Earth Rotation and Reference Systems Service (IERS) and formally accepted by the International Astronomical Union (IAU) in 1997. A realization of the ICRS is the International Celestial Reference Frame (ICRF). On the other hand, IERS is in charge of defining, realizing and promoting the International Terrestrial Reference System (ITRS). Realizations of ITRS are the International Terrestrial Reference Frames (ITRFs), being the ITRF2005 the current reference realization of ITRS.

Jaume.Sanz at 07:52, 18 January 2012

2012-01-18T07:52:32Z

← Older revision		Revision as of 07:52, 18 January 2012
Line 1:		Line 1:
	{{Article Infobox2		{{Article Infobox2
	\|Category=Fundamentals		\|Category=Fundamentals
	~~\|Title={{PAGENAME}}~~		\|Authors=J. Sanz Subirana, J.M. Juan Zornoza and M. Hernández-Pajares, Technical University of Catalonia, Spain.
	\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. ~~Hernandez~~-Pajares, University of ~~Catalunia~~, Spain.
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=gAGE		\|Logo=gAGE
			\|Title={{PAGENAME}}
	}}		}}

	To describe satellite motion, observables and models it is necessary to have a well-defined and reproducible reference coordinate system. Since the accuracy in satellite systems and the precision requirements are tight, these reference systems have to be accurate as well.		To describe satellite motion, observables and models it is necessary to have a well-defined and reproducible reference coordinate system. Since the accuracy in satellite systems and the precision requirements are tight, these reference systems have to be accurate as well.

Carlos.Lopez at 10:08, 28 October 2011

2011-10-28T10:08:42Z

← Older revision		Revision as of 10:08, 28 October 2011
Line 3:		Line 3:
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.		\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.
	\|Level=~~Medium~~		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=gAGE		\|Logo=gAGE

Carlos.Lopez at 09:09, 9 August 2011

2011-08-09T09:09:02Z

← Older revision		Revision as of 09:09, 9 August 2011
Line 17:		Line 17:
	* [[Celestial Ephemeris Pole]]		* [[Celestial Ephemeris Pole]]

	* [[Transforming ~~celestial~~ to ~~terrestrial~~]]		* [[Transforming Celestial to Terrestrial Frames]]

Carlos.Lopez at 08:44, 9 August 2011

2011-08-09T08:44:54Z

← Older revision		Revision as of 08:44, 9 August 2011
Line 27:		Line 27:

	[[Category:Fundamentals]]		[[Category:Fundamentals]]
			[[Category:GNSS Time Reference, Coordinate Frames and Orbits]]
			[[Category:Coordinate Systems]]

Carlos.Lopez at 12:43, 27 July 2011

2011-07-27T12:43:01Z

← Older revision		Revision as of 12:43, 27 July 2011
Line 20:		Line 20:


	It is important to note the difference between Reference System and Reference Frame, two different concepts. The first one is understood as "a theoretical definition", including models and standards for its implementation. The second one is its ``practical implementation'' through observations and a set of reference coordinates, e.g. a set of fundamental stars, for a Celestial Reference Frame, or fiducial stations for a Terrestrial Reference Frame.		It is important to note the difference between Reference System and Reference Frame, two different concepts. The first one is understood as a ''theoretical definition'', including models and standards for its implementation. The second one is its ''practical implementation'' through observations and a set of reference coordinates, e.g. a set of fundamental stars, for a Celestial Reference Frame, or fiducial stations for a Terrestrial Reference Frame.

Carlos.Lopez: Created page with "{{Article Infobox2 |Category=Fundamentals |Title={{PAGENAME}} |Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain. |Level=Medium..."

2011-07-27T12:42:02Z

Created page with "{{Article Infobox2 |Category=Fundamentals |Title={{PAGENAME}} |Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain. |Level=Medium..."

New page

{{Article Infobox2
|Category=Fundamentals
|Title={{PAGENAME}}
|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.
|Level=Medium
|YearOfPublication=2011
|Logo=gAGE
}}

To describe satellite motion, observables and models it is necessary to have a well-defined and reproducible reference coordinate system. Since the accuracy in satellite systems and the precision requirements are tight, these reference systems have to be accurate as well.

* [[Conventional Celestial Reference System]]

* [[Conventional Terrestrial Reference System]]

* [[Celestial Ephemeris Pole]]

* [[Transforming celestial to terrestrial]]

It is important to note the difference between Reference System and Reference Frame, two different concepts. The first one is understood as "a theoretical definition", including models and standards for its implementation. The second one is its ``practical implementation'' through observations and a set of reference coordinates, e.g. a set of fundamental stars, for a Celestial Reference Frame, or fiducial stations for a Terrestrial Reference Frame.

The ICRS was proposed by the IERS and formally accepted by IAU in 1997. A realization of the ICRS is the ICRF. On the other hand, IERS is in charge of defining, realizing and promoting the ITRS. Realizations of ITRS are the ITRFs, being the ITRF2005 the current reference realization of ITRS.

[[Category:Fundamentals]]