[gps-talkusers] Re: THe earthmate:
- From: Michael May <MikeMay@xxxxxxxxxxxxxxxx>
- To: gps-talkusers@xxxxxxxxxxxxx
- Date: Mon, 07 Jun 2004 12:27:39 -0700
I don't think anything about GPS is reliable. Some things are definitely
more reliable than others. The BrailleNote GPS tells you when WAAS is
acquired by saying, "Very Good." This doesn't necessarily mean you have 3
meter accuracy. WAAS varies too.
On the other hand, information you get from sighted passers by isn't
exactly reliable either. It is a matter of perspective. I am optomistic
that coverage and accuracy will only get better and what we have now is great.
Mike
At 11:18 AM 6/7/2004, you wrote:
>If we could reliably get 3 meter accuracy, I could live with that.
>
>
>-----Original Message-----
>From: gps-talkusers-bounce@xxxxxxxxxxxxx
>[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Chip Orange
>Sent: Monday, June 07, 2004 9:11 AM
>To: gps-talkusers@xxxxxxxxxxxxx
>Subject: [gps-talkusers] Re: THe earthmate:
>
>
>I have to ask though, isn't 3 meter accuracy good enough? Or, if you're
>not in north America, I guess it's 15 meter accuracy for the moment,
>although that will change in Europe soon.
>
>Like I said, this kind of esoteric question really should be asked on
>the news groups I mentioned; perhaps someone there will know more.
>
>Hth,
>
>Chip
>
>=20
>
> > -----Original Message-----
> > From: gps-talkusers-bounce@xxxxxxxxxxxxx=20
> > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of lazzaro
> > Sent: Friday, June 04, 2004 6:46 PM
> > To: gps-talkusers@xxxxxxxxxxxxx
> > Subject: [gps-talkusers] Re: THe earthmate:
> >=20
> > I was under the impression, perhaps mistakenly, that there=20 were
> >professional portable GPS receivers that might increase=20 the
> >accuracy of the system. =20
> >=20
> > -----Original Message-----
> > From: gps-talkusers-bounce@xxxxxxxxxxxxx
> > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Chip Orange
> > Sent: Friday, June 04, 2004 8:48 AM
> > To: gps-talkusers@xxxxxxxxxxxxx
> > Subject: [gps-talkusers] Re: THe earthmate:
> >=20
> >=20
> > This is the kind of question that belongs on the news groups=20
> > alt.satellite.gps and sci.geo.satellite-nav.
> >=20
> > My understanding that what you're refering to as a "pro" unit=20
> > costs many thousands of dollars, and must remain stationary=20
> > in one place for a very long period of time to get a very=20
> > accurate fix. I think they may require the deployment of=20
> > multiple antennas as well. It's nothing that really would=20
> > apply to us and our needs here.
> >=20
> > Most of the time, with WAAS working (which does take up to 5=20
> > minutes after starting the receiver, and is currently only in=20
> > north america) the accuracy is less than 3 meters. It's not=20
> > likely you'll need more accuracy than that, so what would you=20
> > want out of a "pro" unit that you're not getting at the moment?
> >=20
> > The only other thing I can think of is that there are units=20
> > which have accelerometers built-in as well, which they use as=20
> > part of a "dead-reckoning" system for the times when they=20
> > lose the satellite fix.
> >=20
> > These are meant for people on the move, but again are many=20
> > thousands of dollars.
> >=20
> >=20
> >=20
> > Chip
> >=20
> > =3D20
> >=20
> > > -----Original Message-----
> > > From: gps-talkusers-bounce@xxxxxxxxxxxxx=3D20
> > > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of lazzaro
> > > Sent: Thursday, June 03, 2004 7:38 PM
> > > To: gps-talkusers@xxxxxxxxxxxxx
> > > Subject: [gps-talkusers] Re: THe earthmate:
> > >=3D20
> > > I'm interested in using other receivers because we'd like to=3D20=20
>
> > >explore so called pro units. We're not even sure if the=20
> > pro=3D20 models=20
> > >have higher accuracy. Is there a site that compares=3D20 the=20
> > efficiency=20
> > >of GPS receivers so one can do a comparison? =3D20 =3D20 =
>-----Original=20
> > >Message-----
> > > From: gps-talkusers-bounce@xxxxxxxxxxxxx
> > > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Chip Orange
> > > Sent: Thursday, June 03, 2004 4:01 PM
> > > To: gps-talkusers@xxxxxxxxxxxxx
> > > Subject: [gps-talkusers] Re: THe earthmate:
> > >=3D20
> > >=3D20
> > > Mike will have to answer that one; my guess is that they are=3D20
> > >=20 giving some special initialization command to the=20
> > SportTrack=3D20 that=20
> > >they don't give to any other model.
> > >=3D20
> > > While the BN may work with any GPS receiver, Sendaro would be=3D20
> > >=20 taking on a lot of extra support issues if they made that=3D20=20
> > claim. =20
> > >The earthMate is particularly easy for a blind person=3D20 to=20
> > deal with,=20
> > >but I bet there are models out there which aren't.
> > >=3D20
> > > If I were buying a receiver to go with the BN product, I=3D20=20
> > wouldn't=20
> > >buy anything other than what Sendaro recommended=3D20 without a very
>
> > >=
>
> > >strong reason; and I would do it with the=3D20 understanding=20
> > that I may=20
> > >run into issues that are difficult=3D20 to deal with. =3D3D20 =3D20
>
> > >=
>That=20
> > >being said, maybe you've got a good enough reason so=3D20 that armed
>
> > >=
>
> > >with the knowledge that all GPS receivers output=3D20 the same data,
>
> > >=
>
> > >you'd be willing to try one for some special=3D20 reason. =20
> > For instance,=20
> > >you may want to share one with a=3D20 sighted spouse, so the
> > >spouse=20 picks it out for its nice color=3D20 display and maps or
> > >some other=20 reason. =3D20
> > > Hth,
> > >=3D20
> > > Chip
> > >=3D20
> > > =3D3D20
> > >=3D20
> > > > -----Original Message-----
> > > > From: gps-talkusers-bounce@xxxxxxxxxxxxx=3D3D20
> > > > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of=3D20
> > > joe j lazzaro
> > > > Sent: Thursday, June 03, 2004 4:22 PM
> > > > To: gps-talkusers@xxxxxxxxxxxxx
> > > > Subject: [gps-talkusers] Re: THe earthmate:
> > > >=3D3D20
> > > > If the Sendero/Humanware BrailleNote GPS system is=3D20
> > > compatable=3D3D20 with
> > >=3D20
> > > >other receivers, I'm wondering why there are only two=3D3D20 =3D20
> > > listed on the
> > >=3D20
> > > >menu? If I were to use another unit not listed=3D3D20 on the=3D20
> > > menu, which=3D20
> > > >receiver should this be set to? =3D3D20 =3D3D20 Joseph J. Lazzaro
> > > >=
>=3D20=20
> > > >HTTP://JoeLazzaro.Com =3D3D20 =3D3D20 =3D3D20 =3D3D20
> > >=3D20
> > >=3D20
> > >=3D20
> >=20
> >=20
> >=20
Michael G. May
CEO Sendero Group
Developers and distributors of BrailleNote GPS
Now distributing BrailleNote, VoiceNote, Miniguide, The Tissot Silen-T
tactile watch and the ID Mate, bar code reader
MikeMay@xxxxxxxxxxxxxxxx
http://www.SenderoGroup.com
(530) 757-6800, Fax (530) 757-6830, Mobile (530) 304-0007
Sendero Group, LLC
1118 Maple Lane, Davis, CA 95616-1723, USA
Latitude, 38 33 9.239 North
Longitude, 121 45 40.145 West
Other related posts:
