Date: Thu, 04 May 2000 07:36:05 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Warner Losh <imp@village.org>, hackers@FreeBSD.ORG Subject: Re: GPS heads up Message-ID: <2288.957418565@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 03 May 2000 20:03:48 PDT." <200005040303.UAA66590@apollo.backplane.com>
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In message <200005040303.UAA66590@apollo.backplane.com>, Matthew Dillon writes: >:The SA can be averaged out, but you need to have another source of >:time as well as GPS. GPS alone will give you a grid square you are >:in, but the nature of the pseudorandom noise is such that you don't >:get a nice sine wave (collapsing for a moment to 1 dimention). It is >:much more distorted than that. >: >:Warner > > SA can *not* be averaged out. People... SA is NOT NOISE. SA *can* be averaged out, it has an average value of zero. But it takes several days or even weeks to get into the centimeter range, depending on the satelite coverage where you are. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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