[gps-talkusers] Re: THe earthmate:
- From: "Chip Orange" <Corange@xxxxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Mon, 7 Jun 2004 10:10:55 -0400
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
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>=20
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