Coordinates Computation from Almanac Data - Revision history

Gema.Cueto at 07:03, 26 February 2025

2025-02-26T07:03:21Z

2022-05-10T06:41:22Z

Corrected typo in equation 1: idot is equal to zero and not i.

← Older revision		Revision as of 06:41, 10 May 2022
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	::<math>		::<math>
	\Delta n = i = C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0		\Delta n = \dot{i} = C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0
	\qquad \mbox{(1)}		\qquad \mbox{(1)}
	</math>		</math>

2021-02-22T14:07:34Z

← Older revision		Revision as of 14:07, 22 February 2021
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	::<math>		::<math>
	\Delta n =~~{\stackrel {\centerdot}~~ i}= C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0		\Delta n = i = C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0
	\qquad \mbox{(1)}		\qquad \mbox{(1)}
	</math>		</math>

2013-01-13T09:26:36Z

← Older revision		Revision as of 09:26, 13 January 2013
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	::<math>		::<math>
	\Delta n =C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0		\Delta n ={\stackrel {\centerdot} i}= C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0
	\qquad \mbox{(1)}		\qquad \mbox{(1)}
	</math>		</math>

2012-02-23T10:11:58Z

2012-01-26T13:00:20Z

← Older revision		Revision as of 13:00, 26 January 2012
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	Thence, the same equations as in article [[GPS and Galileo Satellite Coordinates Computation]] can be used to compute the coordinates from almanac, just taking:		Thence, the same equations as in article [[GPS and Galileo Satellite Coordinates Computation]] can be used to compute the coordinates from almanac, just taking:

	::<math> \Delta n =C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0</math>		::<math>
			\Delta n =C_{uc}=C_{us}=C_{rc}=C_{rs}=C_{ic}=C_{is}=0
			\qquad \mbox{(1)}
			</math>

	:and		:and

	::<math> i=54^o+\delta i \qquad \mbox{(GPS satellites)} </math>		::<math>
			i=54^o+\delta i
			\qquad \mbox{(GPS satellites).}
			\qquad \mbox{(2)}
			</math>

2012-01-26T12:57:31Z

← Older revision		Revision as of 12:57, 26 January 2012
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	The almanac data consist of a reduced set of parameters (with respect to broadcast ephemeris), as it is shown in table 1 for GPS satellites. Similar data is broadcast for Galileo.		The almanac data consist of a reduced set of parameters (with respect to broadcast ephemeris), as it is shown in table 1 for GPS satellites. Similar data is broadcast for Galileo.

			::[[File: Coord_Comp_Alm.png\|none\|thumb\|640px\|'''''Table 1:''''' GPS broadcast almanac parameters.]]

	Thence, the same equations as in article [[GPS and Galileo Satellite Coordinates Computation]] can be used to compute the coordinates from almanac, just taking:		Thence, the same equations as in article [[GPS and Galileo Satellite Coordinates Computation]] can be used to compute the coordinates from almanac, just taking:
Line 19:		Line 20:

	::<math> i=54^o+\delta i \qquad \mbox{(GPS satellites)} </math>		::<math> i=54^o+\delta i \qquad \mbox{(GPS satellites)} </math>


	~~::[[File: Coord_Comp_Alm.png\|none\|thumb\|640px\|'''''Table 1:''''' GPS broadcast almanac parameters.]]~~

2012-01-26T08:21:51Z

← Older revision		Revision as of 08:21, 26 January 2012
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	{{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}}
	}}		}}

	The almanac data allow to compute a raw estimation of the satellites coordinates (1-2 km <math>1- \sigma</math> error), which is needed for signal acquisition by the receiver.		The almanac data allow to compute a raw estimation of the satellites coordinates (1-2 km <math>1- \sigma</math> error), which is needed for signal acquisition by the receiver.

2011-10-27T15:40:13Z

← Older revision		Revision as of 15:40, 27 October 2011
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	\|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

2011-08-08T15:17:10Z

← Older revision		Revision as of 15:17, 8 August 2011
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	[[Category:Fundamentals]]		[[Category:Fundamentals]]
			[[Category:GNSS Time Reference, Coordinate Frames and Orbits]]
	[[Category:GPS]]		[[Category:GPS]]