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Evaluation of CGGTTS time transfer software using multiple GNSS constellations
RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.
RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.ORCID-id: 0000-0003-1710-6058
RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.
2018 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A new software tool for GNSS time transfer implementing the Common GNSS Generic Time Transfer Standard (CGGTTS) has been developed by the time and frequency group at RISE Research Institutes of Sweden. The software handles signals from the satellite navigation systems GPS, GLONASS, Galileo and BeiDou including the most important ranging codes for time transfer applications. The aim of the development is to provide an alternative to existing software and to support time transfer with new GNSS. The paper presents an evaluation of CGGTTS data calculated with the new software tool in comparison with those calculated using two other, independently developed software tools. It is shown that the results obtained from the different software agree to the sub-nanosecond level. Specifically, the agreement seen between individual GPS, Galileo and BeiDou CGGTTS data is at the 100- to 200-picosecond level. Similarly, GLONASS CGGTTS data agree to the sub-nanosecond level. Further, the paper presents a comparison between time transfer links for both long baselines and short, common-clock baselines obtained from a common view analysis of CGGTTS data from the four mentioned GNSS, as well as a combination of them. It finally discusses other features available from the RISE software, such as non-smoothed CGGTTS data, adoption of satellite orbit and clock products from the IGS as well as the results of an evaluation using linear combinations with non-standard CGGTTS codes and signals.

Ort, förlag, år, upplaga, sidor
2018. s. 159-166
Nyckelord [en]
Global navigation satellite system, Global Positioning System, Receivers, Satellites, Software tools, Standards, GNSS, Time Transfer, CGGTTS, Software, IGS
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-34325DOI: 10.1109/EFTF.2018.8409022Scopus ID: 2-s2.0-85050763645OAI: oai:DiVA.org:ri-34325DiVA, id: diva2:1237082
Konferens
2018 European Frequency and Time Forum (EFTF)
Tillgänglig från: 2018-08-07 Skapad: 2018-08-07 Senast uppdaterad: 2019-01-08Bibliografiskt granskad

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