Carlin, Luca und Montenbruck, Oliver und Furthner, Johann und Hauschild, André (2022) UTC and GNSS system time access using PPP with broadcast ephemerides. GPS Solutions, 26. Springer. doi: 10.1007/s10291-022-01326-z. ISSN 1080-5370.
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Kurzfassung
The application of precise point positioning with broadcast ephemerides (PPP-BCE) is discussed as an alternative to the established all-in-view technique for multi-GNSS time transfer. It combines the use of broadcast ephemerides with low-noise carrier-phase observations for accessing GNSS system time scales and Coordinated Universal Time (UTC) with improved precision, and can be employed on stationary as well as mobile receivers in offline or real-time analyses. Using calibrated timing receivers, the method is shown to provide estimates of the GNSS-to-GNSS time offsets (XYTOs) with an accuracy at the 2 ns level. In the absence of prior calibrations, 0.5 ns consistency across different stations is achieved for GPS, Galileo, and BeiDou-3 after adjustment of systematic biases in comparison with calibrated reference stations or broadcast XYTO values. Furthermore, access to GNSS-specific UTC realizations can be obtained through predictions of the UTC offset from GNSS system time as provided in the broadcast ephemerides of individual constellations. The overall quality of the PPP-BCE-derived receiver clock offsets from UTC is assessed using calibrated receivers at various timing laboratories along with BIPM-provided UTC-UTC(k) measurements. Over the 1.5 years covered in the study, an accuracy of 1.8 ns for GPS and 2.5 ns for Galileo is demonstrated. For BeiDou, a slightly worse accuracy of 3 ns is obtained for a single timing laboratory over 9 months.
elib-URL des Eintrags: | https://elib.dlr.de/189935/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | UTC and GNSS system time access using PPP with broadcast ephemerides | ||||||||||||||||||||
Autoren: |
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Datum: | 17 September 2022 | ||||||||||||||||||||
Erschienen in: | GPS Solutions | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 26 | ||||||||||||||||||||
DOI: | 10.1007/s10291-022-01326-z | ||||||||||||||||||||
Verlag: | Springer | ||||||||||||||||||||
ISSN: | 1080-5370 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | GNSS, Time transfer, UTC, GPST, GST, BDT | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||
HGF - Programmthema: | Technik für Raumfahrtsysteme | ||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | R SY - Technik für Raumfahrtsysteme | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Infrastruktur, Flugdynamik, GPS | ||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||
Institute & Einrichtungen: | Raumflugbetrieb und Astronautentraining | ||||||||||||||||||||
Hinterlegt von: | Montenbruck, Dr.rer.nat.hab. Oliver | ||||||||||||||||||||
Hinterlegt am: | 11 Nov 2022 14:25 | ||||||||||||||||||||
Letzte Änderung: | 19 Okt 2023 13:06 |
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