From its outset, GPS was intended to provide position, velocity and time
(PVT). In some of his public talks, one of the people credited with inventing
GPS, Brad Parkinson, renames GPS to GPtS to drive the point home that it is a
positioning and timing service.
-- Richard Langley
On Thu, 14 Dec 2006, Daniel R. Tobias wrote:
>On 13 Dec 2006 at 21:43, Steve Allen wrote:
>
>> http://gauss.gge.unb.ca/papers.pdf/gpsworld.january01.pdf
>
>One quibble with that article is that it gives the Global Positioning
>System as an example of how humanity has been obsessed with knowing
>what time it is. Actually, GPS arises from our obsession with
>knowing what *place* we're at; its need for precise time is a mere
>technical detail of its implementation. (Some of the earlier
>historical needs for precise time also arose out of navigation, where
>knowing one's position in space necessitated also knowing something
>about time.)
>
>--
>== Dan ==
>Dan's Mail Format Site: http://mailformat.dan.info/
>Dan's Web Tips: http://webtips.dan.info/
>Dan's Domain Site: http://domains.dan.info/
>
===============================================================================
Richard B. Langley E-mail: lang_at_unb.ca
Geodetic Research Laboratory Web:
http://www.unb.ca/GGE/
Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142
University of New Brunswick Fax: +1 506 453-4943
Fredericton, N.B., Canada E3B 5A3
Fredericton? Where's that? See:
http://www.city.fredericton.nb.ca/
===============================================================================
Received on Thu Dec 14 2006 - 06:57:53 PST