nach der Bestellung gedruckt Neuware - Printed after ordering - This book presents a novel satellite timekeepingsystem which does not require on-board atomic clocksas used by existing navigation satellite systems suchas GPS, GLONASS or the GALILEO system. Thisconcept is differentiated by the employment of asynchronization framework combined with lightweightsteerable on-board clocks which act as transpondersre-broadcasting the precise time remotely provided bythe time synchronization network located on theground. This allows the system to operate optimallywhen satellites are in direct contact with the groundstation, making it suitable for a system like theJapanese Quasi-Zenith Satellite System, QZSS. Lowsatellite mass and low satellite manufacturing andlaunch cost are significant advantages of this novelsystem. Two possible implementations of the timesynchronization network for QZSS are presented.Additionally, the problem of satellite communicationinterruption is analysed and a solution is presented.Finally a positioning and timing quality analysis,aimed to provide understanding of the actual timingquality requirements for QZSS, is presented. N� de ref. del art�culo 9783639160048

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T�tulo: Remote Synchronization Method for the ...

Editorial: VDM Verlag Dr. M�ller

A�o de publicaci�n: 2009

Encuadernaci�n: Taschenbuch

Condici�n: Neu

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This book presents a novel satellite timekeeping system which does not require on-board atomic clocks as used by existing navigation satellite systems such as GPS, GLONASS or the GALILEO system. This concept is differentiated by the employment of a synchronization framework combined with lightweight steerable on-board clocks which act as transponders re-broadcasting the precise time remotely provided by the time synchronization network located on the ground. This allows the system to operate optimally when satellites are in direct contact with the ground station, making it suitable for a system like the Japanese Quasi-Zenith Satellite System, QZSS. Low satellite mass and low satellite manufacturing and launch cost are significant advantages of this novel system. Two possible implementations of the time synchronization network for QZSS are presented. Additionally, the problem of satellite communication interruption is analysed and a solution is presented. Finally a positioning and timing quality analysis, aimed to provide understanding of the actual timing quality requirements for QZSS, is presented.

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Dr. Tappero holds a MS in electrical engineering and a PhD in engineering from UNSW, Australia. Dr. Tappero worked at the Space Technology Group of AIST in Tsukuba, Japan on a novel timekeeping system for the QZSS. Presently, Dr. Tappero works as researcher at EPFL, Switzerland on GNSS synchronization algorithms and indoor positioning systems.

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