Use of the Global Navigation Satellite Systems for the Construction of the International Time Reference UTC

Jiang, Z.; Arias, E. F.

doi:10.1007/978-3-642-37407-4_43

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…All UTC contributing laboratories operate GPS or GPS/GLONASS equipment for time transfer, providing several types of measurement, e.g., single frequency code, dual frequency code, dual frequency code and phase for GPS (in order of decreasing statistical uncertainty, from nanoseconds to a few hundred picoseconds) [21]. Moreover, new satellite systems under development in Europe (Galileo), in China (BeiDou) and in India (GAGAN) will provide in the next future a very important number of measurements.…”

Section: Towards Real Time Realizations and Predictionsmentioning

confidence: 99%

International atomic time: Status and future challenges

Petit

Arias

Panfilo

2015

Comptes Rendus Physique

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Section: Towards Real Time Realizations and Predictionsmentioning

confidence: 99%

International atomic time: Status and future challenges

Petit

Arias

Panfilo

2015

Comptes Rendus Physique

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“…Timing laboratories have been making use of Global Navigation Satellite Systems (GNSS) stations for decades, in order to compare their clocks remotely [1,2] as needed to combine clocks in a Time Scale Algorithm like the International Atomic Time (TAI) [3]. In parallel, GNSS timing stations are also used to get synchronization on the universal time coordinated (UTC) as broadcast in the GNSS navigation message [4].…”

Section: Introductionmentioning

confidence: 99%

Absolute calibration of GNSS timing stations and its applicability to real signals

et al. 2018

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This paper details techniques for the absolute calibration of receiver chains as used in timing reference stations. The delays experienced by the GNSS signals in all elements of the receiving chain (antenna, receiver and cable) are each measured individually and with careful consideration regarding the uncertainty level assigned to them. Two different receiving chains based on different equipment units, were absolutely calibrated for GPS and Galileo signals.The calibration process and the uncertainty evaluation were then validated through the relative comparison in common clock setup in different real environments. The validation results show that some additional uncertainty has to be considered when the absolute calibration results are transferred to real signals, due to the real environment and to the difference between the chip shapes of the simulated signals and of the true signals coming from the satellites. The final 1 − σ uncertainties are below 1.1 ns for all the GPS and Galileo signals, except 1.8 ns for GPS C/A. The satellite group delays are also determined from the calibrated stations. An agreement at the ns level is found between the so-determined satellite group delays and the values provided by the system operators.

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Analysis of the base station configuration in the system of remote time comparison based on satellite common-view

Ruiqiong

Yang

et al. 2015

2015 12th IEEE International Conference on Electronic Measurement &Amp; Instruments (ICEMI)

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Use of the Global Navigation Satellite Systems for the Construction of the International Time Reference UTC

Cited by 3 publications

References 7 publications

International atomic time: Status and future challenges

International atomic time: Status and future challenges

Absolute calibration of GNSS timing stations and its applicability to real signals

Analysis of the base station configuration in the system of remote time comparison based on satellite common-view

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