[gps-talkusers] Re: GPS on the BUS
- From: "Chip Orange" <Corange@xxxxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Wed, 16 Jun 2004 14:22:35 -0400
Yah, I guess they would frown on any passenger who did manage to open a
window!! :)
That is exactly what the maker of the chip used in the EarthMate (SiRF)
claims; that is, if you get a good fix using 4 or more satellites; it
will maintain it with as few as 2 satellites afterwards.
I have a relatively new vehicle, and it indeed does have the metalic
coating used for window tinting, on the sunroof and the rear windows,
but not on the front and 2 front/side windows, so I have to sit in the
front passenger seat to use my EarthMate.
One other thing worth mentioning; standing still while obtaining your
original coldstart fix will yield a fix *much* quicker than trying to
get one while moving (say in a bus). This may improve matters somewhat
as you suggest if you stand still outside the bus first to get a good
fix, and then board.
Hth,
Chip
=20
> -----Original Message-----
> From: gps-talkusers-bounce@xxxxxxxxxxxxx=20
> [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of=20
> bobbyk@xxxxxxxxxx
> Sent: Wednesday, June 16, 2004 1:51 PM
> To: gps-talkusers@xxxxxxxxxxxxx
> Subject: [gps-talkusers] GPS on the BUS
>=20
> Anna,Chip,
> I thought the same bus-gps signal acquisition issues applied=20
> to airline travel, but I couldn't pry the window open.
> I have found getting a fix before entering a metallic vehicle=20
> helps when a weak signal is all that is available. The warm=20
> start sometimes seems to work when a cold start does not.=20
> When traveling; if I get a fix on the way to the airport I=20
> can generally get a fix through the jets window.
> Bobby
>=20
>=20
>=20
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