EGNOS and WAAS

Xtreme · Occasional Visitor Joined: Jan 20, 2005 Posts: 10

Hello

OK!!! I know that those two systems are like a correction system. The WAAS (Wide Area Augmentation System) works in North America, and THe EGNOS works in Europe :D.
My Magellan SporTrak is ready acording to Magellan to accept both systems, and in my case is the EGNOS that i need. So far so good 8) . BUT i only receive WAAS satelites. My question is shoudn´t i receive the EGNOS satelites instead the WAAS

I´m thinking that, the WAAS that i receive is the EGNOS System, but because of the Software of my receiver this is not capable of diferentiate betwen both signals (WAAS and EGNOS) so when he receives this Signal providing from the EGNOS system he will think its the WAAS.
I know that i´m expressing myself very badly, but i couldn´t explain better. The instruction book is not very explicit :x . I´m very pleased with the acuracy of my GPS but i dont know if the WAAS that he shows is the WAAS or the EGNOS. In case of being the WAAS i think that it´s not useful here in Portugal Confused

.

Sory the bad English

Daniel

lbendlin · Posted: Mon Jan 24, 2005 4:48 pm Post subject:

You are right. The Magellan is an american product, and they are probably just ignorant to the fact that the SBAS is not called WAAS in EMEA.

Since it works this is only a minor annoyance.
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Lutz

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nej · Posted: Tue Jan 25, 2005 11:49 am Post subject:

Strange though, Magellan = Thales = French = European = EGNOS.

I think that Magellan are HQ'd in the US though.

Skippy · Posted: Tue Jan 25, 2005 12:57 pm Post subject:

Xtreme · Occasional Visitor Joined: Jan 20, 2005 Posts: 10

Hello

In conclusion, it doesn´t matter if it appears WAAS on the GPS. If there is any SBAS operating is the EGNOS, because WAAS system doesn´t cover Europe Wink

.
By the way, if EGNOS is not officially operational, i shouldn´t receive any signal at all Confused

. Or should i Question

lbendlin · Posted: Tue Jan 25, 2005 3:58 pm Post subject:

Well, EGNOS does kinda work, from time to time. The "Life saving" bit is not set yet, so they take no responsibility if you use it now.
_________________
Lutz

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Skippy · Posted: Tue Jan 25, 2005 10:17 pm Post subject:

Yes, you will get a signal if you have WAAS enabled, but EGNOS is (most of the time) transmitting data with the "do not use" flag set. Whether the GPS uses this data or ignores it depends on your receiver and firmware revision.

It sounds like your GPS does use it - I don't think it will cause any problems to have it switched on. My Garmin and Holux GPS units will both receive the EGNOS data and use it to for a differential fix, but be aware that EGNOS may or may not be providing useful correction data at any given time! 8O

EGNOS should be officially up and running pretty soon, they have been testing it for some time now.
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Gone fishing!

Xtreme · Occasional Visitor Joined: Jan 20, 2005 Posts: 10

I see...... :o :o

Meanwhile, with or with out the EGNOS the acuracy is pretty good :P. But when EGNOS become oficialy working, i expect better acuracy :D. Normaly with out any SBAS i have less than 7 m of error, sometimes it gets 12 ou more, but 90% of the times is less than 7m.

Regards

Skippy · Posted: Wed Jan 26, 2005 12:33 pm Post subject:

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