[gps-talkusers] Re: e: Re: WAAS IN UK
- From: Michael May <mikemay@xxxxxxxxxxxxxxxx>
- To: gps-talkusers@xxxxxxxxxxxxx
- Date: Fri, 01 Dec 2006 07:57:37 -0800
In Europe, if you see the message WAAS, that means you are receiving the Egnos
signal. Egnos is not fully implemented yet but will eventually provide better
accuracy. I believe this will be rolled out on a country by country basis. I
don't know the latest status but we will find out since Charles and I will be
in Europe for the next week. We will get first hand experience in at least 5
countries.
One thing about WAAS is that it is supposed to p[rovide a more reliable GPS fix
and not just better accuracy. In fact, there are debates as to just how much
more accurate it actually is. It is important to know in terms of knowing how
much to trust your positions and that is why we put it first. Remember that the
accuracy indications are just estimates.
Mike
At 05:51 AM 11/30/2006, you wrote:
>Hi Richard Carl and list
>I receive the WAAS alert from time to time also h dop 1,0 v dop 1,2 and and
>accuracy of about 14-15
>feet. it usually occurs at the coast or when i'm working up in Teesdale or
>Weardale at altitudes of 800 to 1200ft but have received WAAS here in
>Darlington ne England (300ft).
>
>I find poi's much more accurate when WAAS is working, I still use the
>earthmate gps receiver, Has anyone experience that any of the newer receiver's
>work better on trains with heavily tinted windows.
>By the way I would choose "Enhanced" as the term.
>Regards Gavin
>
>Gavin Atkins,
>tel: M 07702:051633,
>Email: gavin.atkins@xxxxxxxxxx
>
>
>>----- Original Message -----
>>From: Charles LaPierre <charles@xxxxxxxxxxxxxxxx
>>To: gps-talkusers@xxxxxxxxxxxxx
>>Date sent: Wed, 29 Nov 2006 15:06:38 -0800
>>Subject: [gps-talkusers] Re: WAAS IN UK
>
>>Hello Richard and list,
>
>>Sorry about the "WAAS" confusion, Mike experienced
>some of this too
>>while in Australia and New Zealand last week, and
>we are still trying
>>to figure out where the differentially corrected
>signals were originating from.
>
>>When the GPS receiver returns that the receiver
>Mode or "Quality of
>>GPS fix" is a "2" it means the fix has been
>"corrected" by some
>>means. In the USA / Canada it means "WAAS" in
>Europe it means
>>"EGNOS" but currently we just say "WAAS" for
>anything corrected. We
>>will be changing this in the future to have a more
>generic term
>>instead of "WAAS" since we have no idea "how" the
>receiver got its
>>differential correction. All we know is that if
>we get a quality of
>>1 it means no corrections, and 2=corrected.
>
>>So what do you all think about a new term that
>means we are receiving
>>corrected GPS data that should be slightly more
>accurate? Any
>>idea's? Instead of saying "WAAS" what should we
>say?
>>"Enhanced", "Corrected", "DGPS"??
>
>>Thanks
>>Charles.
>
>>At 02:32 PM 11/29/2006, you wrote:
>>>Hi,
>
>>>I had an interesting experience this afternoon in
>that, for the
>>>first time ever in the UK, I received the message
>'WAAS, 11
>>>satellites' or words to that effect!
>
>>>Firstly, I didn't think WAAS was available in
>Europe and, secondly,
>>>didn't realise that its equivalent (is it EGNOS?)
>was enabled.
>
>>>Did I receive the WAAS message because it had
>detected EGNOS? If
>>>so, would there be much work involved in changing
>the message to
>>>reflect the system being used? If not, any
>explanation as to why I
>>>received the message?
>
>>>The only other time I've seen this message was
>last week when I was
>>>in San Francisco; could this be related, eg the
>software retained
>>>some form of history?
>
>>>Finally, I don't have a Holux receiver bought from
>Sendero so don't
>>>have the firmware changed to permanently enable
>WAAS; therefore, can
>>>someone remind me, please, what difference this
>makes?
>
>>>So, here's looking forward to even more accurate
>reception!
>
>>>Regards
>
>>>Richard Bartholomew
>>>E-Mail:
>>><mailto:richard_bartholomew@xxxxxxxxxxxxxxxx>richa
>rd_bartholomew@xxxxxxxxxxxxxxxx
>
>>Charles M. La Pierre CTO
>>Sendero Group, LLC
>
>>Lat. 37 15' 25" N Lon: 121 53' 04" W
>
>
>
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