Date: Thu, 4 May 2000 01:47:00 -0500 (CDT) From: Kris Kirby <kris@hiwaay.net> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Warner Losh <imp@village.org>, hackers@FreeBSD.ORG Subject: Re: GPS heads up Message-ID: <Pine.BSF.4.10.10005040144130.4274-100000@barricuda.bsd.nws.net> In-Reply-To: <200005040303.UAA66590@apollo.backplane.com>
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> SA can *not* be averaged out. People... SA is NOT NOISE. I will > repeat that. SA is NOT NOISE. SA is an intentional error > introduced by the satellites that looks like a drunk walking around > the town. It takes a lot of readings over a long period of time > (read: at least a couple of days) for any sort of averaging to > yield a worthwhile result. Two points: 1. The drunken walker idea is rather accurate if you look at a plot. 2. We've actually observed sine-wave like disturbances affecting the plot. It was SA's induced error, plotted over a few hours. ----- Kris Kirby, KE4AHR | TGIFreeBSD... 'Nuff said. <kris@nospam.hiwaay.net> | ------------------------------------------------------- "Fate, it seems, is not without a sense of irony." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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