[FOSS-GPS] GPS in space?
martin.vermeer at tkk.fi
Thu Nov 6 08:29:15 EST 2008
On Thu, 06 Nov 2008 13:55:34 +0100
Marcus Wolschon <Marcus at wolschon.biz> wrote:
> 2008/11/6, Martin Vermeer <martin.vermeer at tkk.fi>:
> > Then there is the CHAMP mission for mapping the Earth's gravitational
> > field, where precise GPS is used to determine the satellite's
> > gravitational acceleration. It is in free fall so senses the field
> > directly -- any nongravitational accelerations by atmospheric drag etc.
> > are directly sensed by an on-board accelerometer.
> > http://www-app2.gfz-potsdam.de/pb1/op/champ/index_CHAMP.html
> > All these are "low" orbits.
> Here are more detailed information about the
> GPS-Receiver used in CHAMP. It can do a "bit" more
> then just calculate a location.
> It is used in combination with the STAR electrostatic micro-accelerometer.
Yes... and the GPS occultation (atmospheric limb sounding) experiment is
fascinating in its own right.
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