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Andi Occasional Visitor
Joined: Nov 17, 2004 Posts: 2
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Posted: Thu Nov 18, 2004 6:21 pm Post subject: WAAS |
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hi there,
I am new to the whole GPS thing - just got my fortuna bluetooth GPS clip-on. Now I wonder how to switch on WAAS or is it on automatically in areas where available? Or do I need a piece of software for my PDA to be able to make use of it / switch it on?
Thanks in advance
Regards
Andreas |
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Fri Nov 19, 2004 4:54 am Post subject: |
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It depends on where you live. In Europe it's called EGNOS. WAAS is for North America.
You can use Crux_View to set the SBAS mode. _________________ Lutz
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Andi Occasional Visitor
Joined: Nov 17, 2004 Posts: 2
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Posted: Fri Nov 19, 2004 12:16 pm Post subject: |
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Lutz,
thanks for the answer. I am actually in Europe so I guess I have to wait until next year to make use of EGNOS.
However where can I get Crux_View to set the SBAS mode (what ever that is - guess I need to do some more research here).
Thanks again
Andreas |
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Fri Nov 19, 2004 1:32 pm Post subject: |
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Emtac Crux_View should be on our downloads page
EGNOS and WAAS are both SBAS systems (satellite based augmentation systems) as opposed to DGPS which is based on surface reference stations. Eventually they all represent some kind of fixed satellite with well known position that help to decrease the GPS signal DOP (dilution of precision) down to 3-5 metres (SBAS) or even sub-metre (for surface based DGPS).
There are a number of glossaries available on the web, for example here
http://www.state.sd.us/deca/DDN4Learning/statewide/GPS/glossary.htm _________________ Lutz
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stevenj Occasional Visitor
Joined: Jan 31, 2005 Posts: 7
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Posted: Thu Feb 10, 2005 8:25 pm Post subject: |
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I've got a Fortuna Clip-on and am using it with TT3 on an ipaq hx2750. So, in either XT it ST modes, does the fortuna use the corrective satellites or do I have to turn it on by using crux somehow? Some instructions on all of this would be great if anybody is knowledgeable enough?
I'm hoping that in XT mode at least, my clip on is using corrections through SBAS somehow? |
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Thu Feb 10, 2005 10:45 pm Post subject: |
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Actually it's exactly the other way round. You can have either XT or SBAS, but not both.
You can enable SBAS in Crux_view, in one of the rightmost tabs. _________________ Lutz
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stevenj Occasional Visitor
Joined: Jan 31, 2005 Posts: 7
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Posted: Thu Feb 10, 2005 11:01 pm Post subject: |
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So to enable sbas, do i have to have my fortuna clip on set in st or xt mode while i access it through crux_viewer? And of all the options, which is the best to set?
I assumed that you put it into xt mode and then select auto, or PRN120 for the egnos? What do I do exactly?
I am also worried that in crux viewer it doesnt display the current sbas setting? |
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Fri Feb 11, 2005 1:17 am Post subject: |
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Please read again what I was writing.
You must set the switch to ST, and then set SBAS to AUTO. Don't change any PRNs
If after that Crux_View does not report the SBAS status then you were not successful in setting it, or your receiver doesn't support it. _________________ Lutz
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stevenj Occasional Visitor
Joined: Jan 31, 2005 Posts: 7
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Posted: Fri Feb 11, 2005 1:34 am Post subject: |
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Thats what I wondered - if you could enable SBAS on the Fortuna Clip On. Thanks for your help so far. I just wanted to confirm that it could be done and that I should be seeing the confirmation somewhere in Crux. |
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