Article: 93353 of sci.geo.satellite-nav Newsgroups: sci.geo.satellite-nav Subject: Re: DGPS coorrections via Telnet References: <7b1fdb$ccj$1@news0.skynet.be> Mime-Version: 1.0 (generated by tm-edit 7.106) Content-Type: text/plain; charset=US-ASCII From: Wolfgang Rupprecht Message-ID: Organization: W S Rupprecht Computer Consulting, Fremont CA Lines: 44 X-Newsreader: Gnus v5.6.45/Emacs 19.34 Date: Wed, 24 Feb 1999 19:11:04 GMT NNTP-Posting-Host: 24.1.65.208 X-Complaints-To: abuse@home.net X-Trace: news.rdc1.sfba.home.com 919883464 24.1.65.208 (Wed, 24 Feb 1999 11:11:04 PDT) NNTP-Posting-Date: Wed, 24 Feb 1999 11:11:04 PDT Path: news1.meer.net!news3.best.com!news2.best.com!news.maxwell.syr.edu!nntp.abs.net!newshub2.home.com!newshub1.home.com!news.home.com!news.rdc1.sfba.home.com.POSTED!not-for-mail Xref: news1.meer.net sci.geo.satellite-nav:93353 "Hendrik BERVOETS" writes: > Living in Belgium, using an old Garmin GPS 45, and testing the Telnet DGPS > services from dgps.wsrcc.com (nearby San Francisco), the maximum of > "synchronised" satellites were 3. > > To allow my GPS 45 to take advantage of the DGPS corrections, I need at > least 4 synchronized sats. > > Does anybody is aware of a similar Telnet-service in Europe. I don't know of any myself. Perhaps someone else will speak up too. There was at least one time in the early morning (local time) that Andreas Bormann managed to get 4 sats in common in Germany. For fun I plotted all the points folks tried to connect up from on a globe. With my lat/lon directly centered on the display, and my local north pointing up, only the thinnest sliver of Europe is visible at approximately the "2 oclock" position. This is probably also a good demo of the great circle route. The fastest way to Europe is up and over at approx. 45 degrees. Folks with X11 workstations can see what I'm looking at by grabbing the following and running the xearth command as such: http://www.wsrcc.com/wolfgang/ftp/markers xearth -once -noshade -pos 'fixed 37.55 -121.94' -markerfile markers I've also got a street atlas (SA6) marker file of the same data, but unfortunately it is just a flat projection. http://www.wsrcc.com/wolfgang/ftp/sa6mkr.txt I wish I could save the xearth and plotted data as a gif, but it doesn't allow that. Anyone know of a globe-display program that will allow this? -wolfgang -- Wolfgang Rupprecht http://www.wsrcc.com/wolfgang/ DGPS signals via the Internet http://www.wsrcc.com/wolfgang/gps/dgps-ip.html