[GeoStL] Re: GPSr use in commercial aircraft
- From: "Jim Bensman" <jbensman1@xxxxxxxxxxx>
- To: <geocaching@xxxxxxxxxxxxx>
- Date: Sat, 16 Aug 2003 23:26:26 -0500
-
you can get the GPS calculated alitutde on the satlighht page
> -----Original Message-----
> From: geocaching-bounce@xxxxxxxxxxxxx
> [mailto:geocaching-bounce@xxxxxxxxxxxxx]On Behalf Of
> goshhawk@xxxxxxxxxxx
> Sent: Saturday, August 16, 2003 11:17 AM
> To: geocaching@xxxxxxxxxxxxx
> Subject: [GeoStL] Re: GPSr use in commercial aircraft
>
>
> -
> I have a question about GPS altitude measurement.
> I think that my Garmin Vista determines altitude by sensing barometric
> pressure. In an aircraft cruising at 37000 feet, the inside cabin altitude
> is maintained at about 8000-9000 feet. Thus wouldn't the GPSr only read
> cabin altitude and not the actual height above ground ?
>
> What is the general altitude measuring source in GPSr's?
>
>
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