<div class="gmail_quote">On Wed, May 26, 2010 at 6:21 PM, <span dir="ltr"><<a href="mailto:nicholas.g.lawrence@tmr.qld.gov.au">nicholas.g.lawrence@tmr.qld.gov.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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<p><tt>> The United States is about to give the now nearly ubiquitous Global<br>
> Positioning System an $8 billion overhaul. The improvements, which<br>
> involve replacing each of the 24 aging GPS satellites, are estimated<br>
> to take over a decade to complete, and will see the triangulation<br>
> margin of error decrease from 20 feet to around 3 feet. The move comes<br>
> as more and more devices, from phones to parking meters, are<br>
> incorporating GPS units into their design.</tt><br>
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<tt>Why would a parking meter need a GPS? It doesn't move around.</tt><br>
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<tt>A surveyor could tell you its location to centimetre accuracy</tt><br>
<tt>and that would be all you need.</tt></p></div></blockquote><div>Very cheap, very accurate time sync. </div></div>