Talk:Global Positioning System/Archive 8: Difference between revisions

Revision as of 00:05, 26 March 2015

Revision as of 00:06, 22 May 2015

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::: That's right. It's a signed bias. Satnav literature uses "advance" as the definition of its sign as follows (note the minus sign contrary to the current description of this article): [[User:Kkddkkdd|Kkddkkdd]] ([[User talk:Kkddkkdd|talk]]) 12:03, 14 February 2015 (UTC)

:::: "the true reception time is <math>\, t_\text{ri} = \tilde{t}_\text{ri} - b</math>"

== The Earth ==

I'm not sure I agree with downcasing "Earth". It seems to me we are mostly using it in a planetary context. See [[MOS:CELESTIALBODIES]]. [[User:Kendall-K1|Kendall-K1]] ([[User talk:Kendall-K1|talk]]) 10:33, 23 March 2015 (UTC)

:I agree that we should <s>definitely</s> keep the upcase and undo [https://en.wikipedia.org/w/index.php?title=Global_Positioning_System&diff=653098208&oldid=651491703 these edits]. - [[User:DVdm|DVdm]] ([[User talk:DVdm|talk]]) 11:32, 23 March 2015 (UTC)

::[[MOS:CELESTIALBODIES]] says ''The words sun, earth, moon and solar system are capitalized (as proper names) when used in an astronomical context to refer to a specific celestial body (The Sun is the star at the center of the Solar System; the Moon orbits Earth). They are not capitalized when used outside an astronomical context''. For GPS satellites in earth orbit, we're talking about an earth-centered system, nothing to do with astronomy or planets. Generally, when "the" is used, caps are not needed. For contexts like "Mar, Earth, and Venus", or "Earth orbits the Sun", we cap it. Same way [https://books.google.com/ngrams/graph?content=the+Earth&case_insensitive=on&year_start=1900&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t4%3B%2Cthe%20Earth%3B%2Cc0%3B%2Cs0%3B%3Bthe%20earth%3B%2Cc0%3B%3Bthe%20Earth%3B%2Cc0%3B%3BThe%20earth%3B%2Cc0 in book usage]; and [https://books.google.com/ngrams/graph?content=Earth+orbits+the&case_insensitive=on&year_start=1900&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t4%3B%2CEarth%20orbits%20the%3B%2Cc0%3B%2Cs0%3B%3BEarth%20orbits%20the%3B%2Cc0%3B%3Bearth%20orbits%20the%3B%2Cc0]. [[User:Dicklyon|Dicklyon]] ([[User talk:Dicklyon|talk]]) 03:31, 26 March 2015 (UTC)

::: Yes, perhaps. But "...''we're talking about an earth-centered system''", so we're de-facto talking in an astronomical context. If indeed the Moon orbits the Earth, then satellites also orbit the Earth, while peasants grow their crops in the earth, no? Anyway, it's not that big a big deal {{smiley}} - [[User:DVdm|DVdm]] ([[User talk:DVdm|talk]]) 08:24, 26 March 2015 (UTC)

:::But we're talking about our specific planet, Earth, where "Earth" is a proper noun. If we had GPS satellites orbiting the Moon, wouldn't we use caps, so that you know we're talking about our Moon and not the moons of Jupiter? Simply using the definite article isn't enough, that just tells us it's a particular moon, but not which one. [[User:Kendall-K1|Kendall-K1]] ([[User talk:Kendall-K1|talk]]) 11:17, 26 March 2015 (UTC)

== Redirs ==

I changed the wording of the new redirects from "European GPS" to "European equivalent" (and same for GLONASS). Although it's in quotes, I think it's too confusing if we call Galileo by the colloquial name "European GPS". I'm also not sure we need these redirs. We could change the hatnote to something like "This article is about the US satnav system" and add Galileo and GLONASS to the disambiguation page. [[User:Kendall-K1|Kendall-K1]] ([[User talk:Kendall-K1|talk]]) 13:30, 20 April 2015 (UTC)