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what the main the PDOP = 3.40, HDOP = 1.70, VDOP = 2.90
Do you mean American or Soccer? Do you mean width or length?
American: 110m x 49m, Soccer 45m-90m x 90m-120m.
The table shows 0; I had understood it to be 1, so I looked at the lone reference, in hopes of learning more. The reference indicates 1 as optimal, but perhaps it's wrong. Are there any more references for this? 129.74.64.45 ( talk) 01:42, 9 September 2008 (UTC)
Optimal value was set to 1 and now <1. Should not be still 1 as ideal? It's unclear what the range [0,1[ means... 2A01:E35:8BAB:7050:5039:E67F:8B81:CCBD ( talk) 14:41, 20 October 2015 (UTC)
If (x - xi)/Ri is meant to be a component of a unit vector (with length of 1 unit) it would seem then the time difference has already been converted to spacial distance for Ri. If so, why does c (speed of light) appear in the matrix math? I could see if Ri/c was meant to be meters/(meters/second) giving seconds in the final column (making it a time component), but having c standing out there all on it's own seems inconsistent. (Or am I missing something more basic or more esoteric here?)
Also it would be helpful is a more authortative document was referenced - GPS is a standard, and there must be a standard document for it defining (among other things) GDOP, HDOP, VDOP and PDOP as defined for use in GPS calculations. -- BrianFennell ( talk) 20:21, 19 April 2009 (UTC)
Excellent points. I just ran a GDOP calculation using c in the last column and the inverse is not usable due to the singularity of A'A. Using 1 instead of c in the final column is the method defined in Per Enge's book on GPS. -- Steven Waslander —Preceding unsigned comment added by 129.97.68.181 ( talk) 15:48, 20 May 2009 (UTC)
GPS GDOP metric - 2000 IEE Proceedings -
Dilution of Precision-Based Lunar Navigation Assessment for Dynamic Position Fixing
B.W. Parkinson (Ed) Global Positioning System: Theory and Applications, Vols I and II 1996, AIAA Press.
Matrix Inversion - Ask Dr Math
In section "Computation of DOP values", the first math expression is underlined. Does this have some meaning, that I am not aware of, or is it there by mistake?
Velle ( talk) 01:11, 25 March 2010 (UTC)
Have you noticed that the z letters (that are written in math style, and rendered) have lost their diagonal line? Now they look like the approximation symbol. I don't know if this could be fixed somehow, but it sure will confuse some people.
Velle ( talk) 01:23, 25 March 2010 (UTC)
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There's significant overlap between the present article and section Error analysis for the Global Positioning System#Dillution of precision. fgnievinski ( talk) 20:54, 13 April 2021 (UTC)
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what the main the PDOP = 3.40, HDOP = 1.70, VDOP = 2.90
Do you mean American or Soccer? Do you mean width or length?
American: 110m x 49m, Soccer 45m-90m x 90m-120m.
The table shows 0; I had understood it to be 1, so I looked at the lone reference, in hopes of learning more. The reference indicates 1 as optimal, but perhaps it's wrong. Are there any more references for this? 129.74.64.45 ( talk) 01:42, 9 September 2008 (UTC)
Optimal value was set to 1 and now <1. Should not be still 1 as ideal? It's unclear what the range [0,1[ means... 2A01:E35:8BAB:7050:5039:E67F:8B81:CCBD ( talk) 14:41, 20 October 2015 (UTC)
If (x - xi)/Ri is meant to be a component of a unit vector (with length of 1 unit) it would seem then the time difference has already been converted to spacial distance for Ri. If so, why does c (speed of light) appear in the matrix math? I could see if Ri/c was meant to be meters/(meters/second) giving seconds in the final column (making it a time component), but having c standing out there all on it's own seems inconsistent. (Or am I missing something more basic or more esoteric here?)
Also it would be helpful is a more authortative document was referenced - GPS is a standard, and there must be a standard document for it defining (among other things) GDOP, HDOP, VDOP and PDOP as defined for use in GPS calculations. -- BrianFennell ( talk) 20:21, 19 April 2009 (UTC)
Excellent points. I just ran a GDOP calculation using c in the last column and the inverse is not usable due to the singularity of A'A. Using 1 instead of c in the final column is the method defined in Per Enge's book on GPS. -- Steven Waslander —Preceding unsigned comment added by 129.97.68.181 ( talk) 15:48, 20 May 2009 (UTC)
GPS GDOP metric - 2000 IEE Proceedings -
Dilution of Precision-Based Lunar Navigation Assessment for Dynamic Position Fixing
B.W. Parkinson (Ed) Global Positioning System: Theory and Applications, Vols I and II 1996, AIAA Press.
Matrix Inversion - Ask Dr Math
In section "Computation of DOP values", the first math expression is underlined. Does this have some meaning, that I am not aware of, or is it there by mistake?
Velle ( talk) 01:11, 25 March 2010 (UTC)
Have you noticed that the z letters (that are written in math style, and rendered) have lost their diagonal line? Now they look like the approximation symbol. I don't know if this could be fixed somehow, but it sure will confuse some people.
Velle ( talk) 01:23, 25 March 2010 (UTC)
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Dilution of precision (GPS). Please take a moment to review
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Cheers.— cyberbot II Talk to my owner:Online 01:27, 9 January 2016 (UTC)
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Cheers.— InternetArchiveBot ( Report bug) 09:40, 23 January 2018 (UTC)
There's significant overlap between the present article and section Error analysis for the Global Positioning System#Dillution of precision. fgnievinski ( talk) 20:54, 13 April 2021 (UTC)