A Digital Circuit for Jitter Reduction of GPS-disciplined 1-pps Synchronization Signals

Gasparini, Leonardo; Zadedyurina, O.; Fontana, G.; Macii, David; Boni, Andrea; Ofek, Y.

doi:10.1109/amuem.2007.4362576

Cited by 15 publications

(9 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, if the grand-master is a low-cost GPSdisciplined clock, it may also happen that |ν m | < |ν s |, but σ εm is in the order of 10-20 ns, i.e. larger than σ εs [13].…”

Section: Model Descriptionmentioning

confidence: 95%

A master-slave synchronization model for enhanced servo clock design

Macii

Fontanelli

Petri

2009

2009 International Symposium on Precision Clock Synchronization for Measurement, Control and Communication

Self Cite

View full text Add to dashboard Cite

Slave servo clocks have an essential role in hardware and software synchronization techniques based on Precision Time Protocol (PTP). The objective of servo clocks is to remove the drift between slave and master nodes, while keeping the output timing jitter within given uncertainty boundaries. Up to now, no univocal criteria exist for servo clock design. In fact, the relationship between controller design, performances and uncertainty sources is quite evanescent. In this paper, we propose a quite simple, but exhaustive linear model, which is expected to be used in the design of enhanced servo clock architectures.

show abstract

“…However, if the grand-master is a low-cost GPSdisciplined clock, it may also happen that |ν m | < |ν s |, but σ εm is in the order of 10-20 ns, i.e. larger than σ εs [13].…”

Section: Model Descriptionmentioning

confidence: 95%

A master-slave synchronization model for enhanced servo clock design

Macii

Fontanelli

Petri

2009

2009 International Symposium on Precision Clock Synchronization for Measurement, Control and Communication

Self Cite

View full text Add to dashboard Cite

show abstract

“…Like MTIE, this variance assumes no dead time between adjacent ( ) measurements. In [15] requirements for a PRC are specified in terms of maximum allowed values of MTIE and TDEV as calculated by (2) and (3). These requirements are listed in Tables.…”

Section: B Stabilitymentioning

confidence: 99%

“…A GNSS receiver is designed to compute a position, velocity and time (PVT) solution. Essentially GNSS can be used for time-keeping purposes with an accuracy of some tens of nanoseconds [1], [2], [3]. GNSS signals once received at the user segment are weak and any sort of interference, either intentional or unintentional, can degrade the quality of the PVT solution dramatically which in turn would put end users of GNSS timing services such as large scale power distribution networks, banks, etc.…”

Section: Introductionmentioning

confidence: 99%

STRIKE3-Case Study for Standardized Testing of Timing-Grade GNSS Receivers Against Real-World Interference Threats

Hashemi

Thombre

Ferrara

et al. 2019

2019 International Conference on Localization and GNSS (ICL-GNSS)

View full text Add to dashboard Cite

One of the major use cases of GNSS signals is precise time keeping but introduction of interference signals has threatened the reliability of such a functionality. Therefore, it is necessary to identify signal types most threatening to GNSS and adopt solutions as they evolve. We studied the performance of a timing-grade GNSS receiver in presence of interference signals. We tested the robustness of the receiver against different classes of signals which were captured in real world and identified as most threatening interference to GNSS by the EU Horizon 2020 research project STRIKE3. We showed that the quality of the time solution provided by the receiver degrades in their presence. Through statistical analysis we characterized the degradation of the solution in case of different classes of interference signals.

show abstract

“…Note that the data is obtained from the IGS website [15]. A jitter of ±100 ns is typically for most consumer and industrial applications [16]. Nonetheless, a much lower jitter is required for distributed radars.…”

Section: Gp S P P S Predictingmentioning

confidence: 99%

Phase Noise Suppression in GPS-Disciplined Frequency Synchronization Systems

Wang

2011

Fluct. Noise Lett.

View full text Add to dashboard Cite

Global positioning system (GPS)-disciplined quartz oscillator can provide a precise time and frequency standard. However, possible phase errors and biases caused by oscillator phase noise must be suppressed or compensated for some applications, e.g., distributed radar systems, in which a rigorous phase or frequency synchronization precision is required. Moreover, the quartz oscillator is necessary to provide a holdover of time or frequency when the GPS signals are lost. This letter presents a signal processing and hardware design strategy for suppressing phase noise in GPS-disciplined frequency synchronization systems. Firstly, the quartz oscillator frequency is disciplined by the GPS pulse-per-second (PPS) signals. Next, a recursive algorithm is applied to suppress the possible jitters when the GPS PPS signals are lost. Finally, a direct digital synthesizer (DDS)-based multiple frequency tuning synthesizer is presented to generate the whole system frequencies. Although the use of GPS signal to discipline oscillator for frequency transfer is not a new concept, the originality of this letter lies in the proposed phase noise suppression methods, along with the hardware design strategies.

show abstract

A Digital Circuit for Jitter Reduction of GPS-disciplined 1-pps Synchronization Signals

Cited by 15 publications

References 10 publications

A master-slave synchronization model for enhanced servo clock design

A master-slave synchronization model for enhanced servo clock design

STRIKE3-Case Study for Standardized Testing of Timing-Grade GNSS Receivers Against Real-World Interference Threats

Phase Noise Suppression in GPS-Disciplined Frequency Synchronization Systems

Contact Info

Product

Resources

About