[FOSS-GPS] GPS in space?

[Martin Vermeer]

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.
> 
> http://www-app2.gfz-potsdam.de/pb1/op/champ/systems/index_SYSTEMS.html
> 
> Marcus

Yes... and the GPS occultation (atmospheric limb sounding) experiment is
fascinating in its own right.

- Martin