Path: news.ccsf.jp!tomockey.ddo.jp!border1.nntp.dca.giganews.com!nntp.giganews.com!postnews.google.com!i76g2000hsf.googlegroups.com!not-for-mail From: junoexpress Newsgroups: alt.math.recreational,de.sci.mathematik,fr.sci.maths,japan.sci.math,sci.math Subject: Re: GPS Math Date: Fri, 5 Sep 2008 12:01:47 -0700 (PDT) Organization: http://groups.google.com Lines: 25 Message-ID: References: NNTP-Posting-Host: 134.53.130.33 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1220641307 5833 127.0.0.1 (5 Sep 2008 19:01:47 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Fri, 5 Sep 2008 19:01:47 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: i76g2000hsf.googlegroups.com; posting-host=134.53.130.33; posting-account=3WPJYgoAAAA55VjhzK9i07RN8h8u8eEs User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Tablet PC 1.7; .NET CLR 1.0.3705; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30),gzip(gfe),gzip(gfe) Xref: news.ccsf.jp japan.sci.math:132 On Sep 5, 1:35=A0pm, "Jon G." wrote: > Here is the math that calculates position from 3 satellites. =A0There are= 2 > points of intersection of 3 spheres of known radii, which are determined = by > time-stamped transmissions from the satellites. > > http://www.geocities.com/jongiff2000/GPS_math.xls > > Jon Giffen > jon8...@peoplepc.com Pick up a book (see Spilker, Tsui, or Enge & Misra) and do some reading instead of relying on others or the Internet solely for your info. As you are hopefully learning, this is not a very reliable strategy. But if you find this all too taxing for your mind, then at last read http://en.wikipedia.org/wiki/Pseudorange (*read*, don't *skim*, got it) Cheers Quaker, M