[FOSS-GPS] GPS in space?

[Marcus Wolschon]

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