The satellite based Navstar Global Positioning System (GPS), to be used as the primary navigation system onboard the Columbus Free Flying Laboratory, is addressed. Besides the absolute navigation, special emphasis is put on the determination of position and velocity relative to the rendezvous target. For this purpose the relative GPS method is to be used, which means that the navigation solution for the relative position is based on the raw (uncorrected) GPS measurements of two GPS receivers, one onboard the target and one onboard the chaser. An overview of the Free Flyer mission is given and the resulting navigation requirements and the achievable navigation performance are summarized. The principle of GPS navigation is explained with emphasis on relative GPS. The design of a spaceborne GPS receiver and its integration into the GNC subsystem architecture is presented.
Columbus Free-Flyer GNC High Precision GPS Navigation in Space
1991
8 pages
Report
Keine Angabe
Englisch
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