[OSM-talk] [talk-au] US to spend $8bn upgrading GPS constellation

[Ian Dees]

On Wed, May 26, 2010 at 6:21 PM, <nicholas.g.lawrence at tmr.qld.gov.au> wrote:

> > The United States is about to give the now nearly ubiquitous Global
> > Positioning System an $8 billion overhaul. The improvements, which
> > involve replacing each of the 24 aging GPS satellites, are estimated
> > to take over a decade to complete, and will see the triangulation
> > margin of error decrease from 20 feet to around 3 feet. The move comes
> > as more and more devices, from phones to parking meters, are
> > incorporating GPS units into their design.
>
> Why would a parking meter need a GPS? It doesn't move around.
>
> A surveyor could tell you its location to centimetre accuracy
> and that would be all you need.
>
Very cheap, very accurate time sync.
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