Název: Time and Frequency Transfer Using Satellite Based Augmentation System GAGAN
Autoři: Pánek, Petr ; Kuna, Alexander
Typ dokumentu: Příspěvky z konference
Konference/Akce: Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013, Praha (CZ), 2013-07-21 / 2013-07-25
Rok: 2013
Jazyk: eng
Abstrakt: Aided Geo Augmented Navigation) is an Indian SBAS (Satellite Based Augmentation Systems). In contrast to the European EGNOS, this system already supports the navigation function and it transmits signals both in L1 and L5 frequency channels. We used the GAGAN signals for an experimental common-view time transfer between IPE Prague and PTB Braunschweig which is a distance of 370 km and we also tested the time transfer properties using a single clock common-view. The L1 and ionosphere-free code measurements have markedly lower accuracy compared to a GPS common-view because of rather narrow bandwidth of the SBAS signal in L1 frequency channel. L5 code measurement provides much better precision. It results from the single clock common-view that the observed fluctuations can be described as white noise with standard deviations of 6 ns, 1.3 ns and 14 ns for L1, L5 and ionosphere-free combination. The results obtained from the carrier phase measurements are promising. The single clock common-view precision was approximately 30 ps RMS even for the ionosphere-free combination.
Klíčová slova: Frequency channels; GAGAN; Navigation functions
Zdrojový dokument: Proceeding 2013 Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013, ISBN 9781479903429

Instituce: Ústav fotoniky a elektroniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0224646

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-170623


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fotoniky a elektroniky
Konferenční materiály > Příspěvky z konference