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Date:      Thu, 27 May 1999 10:29:20 +0100
From:      "Chris R." <c.raven@ukonline.co.uk>
To:        Marius Bendiksen <mbendiks@eunet.no>
Cc:        Terry Lambert <tlambert@primenet.com>, freebsd-chat@FreeBSD.ORG
Subject:   Re: New resource on freefall.
Message-ID:  <374D1070.25739C4B@ukonline.co.uk>
References:  <Pine.BSF.4.05.9905271109580.29676-100000@login-1.eunet.no>

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Marius Bendiksen wrote:
> 
> > > The resolution is a little low! You should borrow someones GPS unit :)
> > The accuracy is a little low!  You should borrow a military unit :)
> 
> Hey, in peace times those won't get more accurate than 30 metres?
> 
> - Marius -
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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Actually, if you go D-GPS (Differential GPS) you are dealing in
decimetres

Military i.e. not using the 'selective availability' (a clock messing
filter) is measured +/- 10m

Commercial GPS is +/- 100m roughly. However users do report much higher
accuracy's using GLONAS and GPS+GLONAS systems as the Ruskies aren't
filtering output at this time.

That said, their satellites keep breaking down so its purely academic  
:-\


CR


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