Title :
Results from the PoSAT GPS experiment
Author :
Unwin, Martin ; Sweeting, Martin
Author_Institution :
Centre for Satellite Eng. Res., Surrey Univ., Guildford, UK
Abstract :
The PoSAT-1 microsatellite, launched in September 1993, carries a GPS Navigation Unit as one of its experiments. The Navigation Unit consists of a GPS receiver, antenna and processing hardware. Using the Navigation Unit, the satellite will be able to directly self-track itself to a high degree of accuracy. The supporting software will enable the logging of experimental data, the synchronisation of the satellite and ground station clocks, payload switching and on-board orbit determination through data filtering. This paper briefly describes the experiment and shows some of the preliminary orbital results. A brief analysis of PoSAT´s requirements for the autonomous derivation of Keplerian elements is presented, showing the suitability of the experiment for this purpose
Keywords :
aerospace computer control; computerised navigation; radionavigation; satellite relay systems; synchronisation; GPS Navigation Unit; GPS receiver; Keplerian elements; PoSAT GPS experiment; PoSAT-1 microsatellite; antenna; autonomous derivation; data filtering; experimental data logging; ground station clocks; on-board orbit determination; orbital results; payload switching; processing hardware; satellite clock; software; synchronisation; Artificial satellites; Attitude control; Earth; Filtering; Global Positioning System; Hardware; Payloads; Satellite ground stations; Satellite navigation systems; Synchronization;
Conference_Titel :
Position Location and Navigation Symposium, 1994., IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7803-1435-2
DOI :
10.1109/PLANS.1994.303365
