From owner-freebsd-hackers Thu May 4 7:16:11 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from ns.yogotech.com (ns.yogotech.com [206.127.123.66]) by hub.freebsd.org (Postfix) with ESMTP id 5D2A037B698 for ; Thu, 4 May 2000 07:16:08 -0700 (PDT) (envelope-from nate@yogotech.com) Received: from nomad.yogotech.com (nomad.yogotech.com [206.127.123.131]) by ns.yogotech.com (8.9.3/8.9.3) with ESMTP id IAA10426; Thu, 4 May 2000 08:11:06 -0600 (MDT) (envelope-from nate@nomad.yogotech.com) Received: (from nate@localhost) by nomad.yogotech.com (8.8.8/8.8.8) id IAA17374; Thu, 4 May 2000 08:11:06 -0600 (MDT) (envelope-from nate) Date: Thu, 4 May 2000 08:11:06 -0600 (MDT) Message-Id: <200005041411.IAA17374@nomad.yogotech.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: Matthew Dillon Cc: Poul-Henning Kamp , Warner Losh , hackers@FreeBSD.ORG Subject: Re: GPS heads up In-Reply-To: <200005040801.BAA67715@apollo.backplane.com> References: <2288.957418565@critter.freebsd.dk> <200005040801.BAA67715@apollo.backplane.com> X-Mailer: VM 6.34 under 19.16 "Lille" XEmacs Lucid Reply-To: nate@yogotech.com (Nate Williams) Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > :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 > > Months or years to get into the centimeter range. That's very different from what the GPS experts at SRI tell me. They start to average things out in a matter of hours, and within a week can have it almost gone. However, they're also using multiple satellites, which allows them to more quickly find the center. Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message