Details
| Original language | English |
|---|---|
| Title of host publication | 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9781665497183 |
| Publication status | Published - 2022 |
| Event | 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Paris, France Duration: 24 Apr 2022 → 28 Apr 2022 |
Publication series
| Name | 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings |
|---|
Abstract
Global Navigation Satellite System (GNSS) frequency transfer technique requires two GNSS receivers, each connected to an external frequency signal of the clocks or oscillator to be compared. Hence, the estimated receiver clock difference is the parameter of interest. The task is to eliminate the errors influencing the estimation process, because they degrade the stability and the uncertainty level of the transferred frequency. In this contribution, we review the most dominant error sources mentioned in literature and categorize them into hardware errors and signal propagation errors. The focus is directed further on sub-daily errors such as multipath and tropospheric delays, for which we carry out simulations of their effect on the frequency instability and the response in the frequency domain by computing the power spectrum density. Additionally, we analyze real data of two baselines with lengths of about 2m and 295m where all the receivers are connected to the same UTC frequency signal. The frequency instability is estimated to be in order of 10-17 for the first baseline and 10-16 for the second, where we characterize the reasons for this degradation through estimating the power spectrum of the clock difference time series.
ASJC Scopus subject areas
- Computer Science(all)
- Computer Networks and Communications
- Computer Science(all)
- Signal Processing
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Mathematics(all)
- Control and Optimization
- Physics and Astronomy(all)
- Instrumentation
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2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. (2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Inventory of Error Sources Limiting GNSS-based Frequency Transfer
AU - Elmaghraby, Ahmed
AU - Krawinkel, Thomas
AU - Schön, Steffen
N1 - Funding Information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), project number 434617780, SFB 1464.
PY - 2022
Y1 - 2022
N2 - Global Navigation Satellite System (GNSS) frequency transfer technique requires two GNSS receivers, each connected to an external frequency signal of the clocks or oscillator to be compared. Hence, the estimated receiver clock difference is the parameter of interest. The task is to eliminate the errors influencing the estimation process, because they degrade the stability and the uncertainty level of the transferred frequency. In this contribution, we review the most dominant error sources mentioned in literature and categorize them into hardware errors and signal propagation errors. The focus is directed further on sub-daily errors such as multipath and tropospheric delays, for which we carry out simulations of their effect on the frequency instability and the response in the frequency domain by computing the power spectrum density. Additionally, we analyze real data of two baselines with lengths of about 2m and 295m where all the receivers are connected to the same UTC frequency signal. The frequency instability is estimated to be in order of 10-17 for the first baseline and 10-16 for the second, where we characterize the reasons for this degradation through estimating the power spectrum of the clock difference time series.
AB - Global Navigation Satellite System (GNSS) frequency transfer technique requires two GNSS receivers, each connected to an external frequency signal of the clocks or oscillator to be compared. Hence, the estimated receiver clock difference is the parameter of interest. The task is to eliminate the errors influencing the estimation process, because they degrade the stability and the uncertainty level of the transferred frequency. In this contribution, we review the most dominant error sources mentioned in literature and categorize them into hardware errors and signal propagation errors. The focus is directed further on sub-daily errors such as multipath and tropospheric delays, for which we carry out simulations of their effect on the frequency instability and the response in the frequency domain by computing the power spectrum density. Additionally, we analyze real data of two baselines with lengths of about 2m and 295m where all the receivers are connected to the same UTC frequency signal. The frequency instability is estimated to be in order of 10-17 for the first baseline and 10-16 for the second, where we characterize the reasons for this degradation through estimating the power spectrum of the clock difference time series.
UR - http://www.scopus.com/inward/record.url?scp=85137370297&partnerID=8YFLogxK
U2 - 10.1109/EFTF/IFCS54560.2022.9850608
DO - 10.1109/EFTF/IFCS54560.2022.9850608
M3 - Conference contribution
AN - SCOPUS:85137370297
T3 - 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings
BT - 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2022
Y2 - 24 April 2022 through 28 April 2022
ER -