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Author Belloni, M. ♦ Gioia, M. ♦ Beretta, S. ♦ Waller, P. ♦ Droz, F. ♦ Mosset, P. ♦ Busca, G.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Prognostics and health management ♦ Temperature measurement ♦ Sensitivity ♦ Cavity resonators ♦ Physics ♦ Frequency measurement ♦ Thermal stability
Abstract On-board atomic clocks represent the key technology for the success of any satellite navigation system mission and their development has been continuously supported by ESA. The PHM (Passive Hydrogen Maser) has been selected as master clock of the Galileo Navigation Payload and the almost three years of continuous observation on board of GIOVE-B satellite have confirmed the outstanding performance in terms of frequency stability and negligible drift [1]. The results coming from ground life testing have given important feedbacks on the PHM technology capability to comply with the required 12 years of lifetime. The above was the starting point for the development of a Miniaturized PHM (mPHM) carried out in the frame of the ESA European GNSS Evolutions Programme. The main target was to preserve the excellent PHM frequency stability performance with reduction of the overall mass and instrument sensitivity to the environmental conditions (in particular to temperature). This paper presents an overview of the main results achieved by the design, manufacturing and testing of a MPHM elegant breadboard (EBB); the 30% of mass reduction already achieved on the Physic Package gives the concrete possibility to have a complete instrument with a mass of 12Kg.
Description Author affiliation: European Space Agency (ESTEC), Nordwijk, Netherlands (Mosset, P.) || SpectraTime Neuchâtel, Switerland (Waller, P.; Droz, F.) || Selex Galileo, Milan, Italy (Belloni, M.; Gioia, M.; Beretta, S.) || KyTime Neuchâtel, Switerland (Busca, G.)
ISBN 9781612841113
ISSN 10756787
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-05-02
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781612841120
Size (in Bytes) 1.14 MB
Page Count 5
Starting Page 1
Ending Page 5


Source: IEEE Xplore Digital Library