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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: GPS SA and Network Timing
In our next episode of Militant dictator How-to, we'll show you how to upgrade an antique scud missile to with a guidance system capable of 3-meter accuracy for less than $500.00 per unit.. Stay tuned! -----Original Message----- From: Ian A Finlay [mailto:[email protected]] Sent: Wednesday, September 26, 2001 10:03 AM To: Eric Germann Cc: [email protected] Subject: RE: GPS SA and Network Timing 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
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