Advanced Development Activities for GalileoSat On-board Equipment

G. Gatti, E. Daganzo, D. Hannes, F. Emma, R. Garcia Prieto, J. Haddon, M. Guglielmi, J. Rosello Guasch and M. Sabbadini

Abstract:	In preparation of the GalileoSat mission a number of developments of on-board equipment have been initiated by the European Space Agency. These activities aim at an initial proof of concept, qualification of critical technologies, evaluation of obtainable performance, and production of development models for early flight experiments and test beds. The main drivers of these pre-development activities are miniaturisation of mass and size, maximisation of electrical performance and reliability, and minimisation of cost for the manufacturing of the production units. The pre-development activities cover the following payload and platform major equipment: * on-board highly stable clocks and clock monitoring and control unit * solid state power amplifiers * navigation signal generator and related digital technologies * frequency generation/modulation unit * highly stable output multiplexers • wide-band array antennas • dual-mode TT&C transponder. The paper will present an overview of the above activities and provide information on the main design tradeoffs, the technologies and techniques utilised, and on the major challenges encountered to meet the stringent performance of the GalileoSat spacecraft mission.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	384 - 390
Cite this article:	Gatti, G., Daganzo, E., Hannes, D., Emma, F., Prieto, R. Garcia, Haddon, J., Guglielmi, M., Guasch, J. Rosello, Sabbadini, M., "Advanced Development Activities for GalileoSat On-board Equipment," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 384-390.
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