nanog mailing list archives
RE: GPS SA and Network Timing
From: Ian A Finlay <iaf () andrew cmu edu>
Date: Wed, 26 Sep 2001 10:03:02 -0400 (EDT)
Hello Eric, I recently purchased a GPS. The manual indicates that SA has no effect on timing. SA only affects positioning. Actually, I just downloaded the latest firmware. They now have something called WAAS (http://www.magellangps.com/press/general/pr010521waas.htm). Quoting from that URL: "WAAS, developed by the United States government, calculates errors in the GPS signal then transmits correction messages to WAAS-capable GPS receivers. Upgraded Magellan receivers provide higher accuracy, not only from WAAS signals, but also when receiving correction signals from the European Geostationary Navigation Overlay System (EGNOS), which covers Europe. Additionally, projected specifications for the forthcoming Multifunctional Transport Satellite-based Augmentation System (MSAS) for Asia suggest that upgraded Magellan receivers will work with this system as well. As a result, Magellan customers will gain better than three-meter positioning accuracy throughout much of the world." Regards, Ian
Current thread:
- GPS SA and Network Timing Eric Germann (Sep 26)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Marshall Eubanks (Sep 26)
- <Possible follow-ups>
- RE: GPS SA and Network Timing Ian A Finlay (Sep 26)
- Re: GPS SA and Network Timing David Lesher (Sep 26)
- Re: GPS SA and Network Timing Valdis . Kletnieks (Sep 26)
- Re: GPS SA and Network Timing E.B. Dreger (Sep 27)
- Re: GPS SA and Network Timing David Lesher (Sep 26)
- RE: GPS SA and Network Timing Hire, Ejay (Sep 26)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Owen DeLong (Sep 26)
- Re: GPS SA and Network Timing Joel Jaeggli (Sep 26)
- Re: GPS SA and Network Timing Hank Nussbacher (Sep 27)
- Re: GPS SA and Network Timing Robert E. Seastrom (Sep 26)
- Re: GPS SA and Network Timing Wolfgang Henke (Sep 26)
- Re: GPS SA and Network Timing Marshall Eubanks (Sep 26)