Proceedings ArticleDOI
Improved reference clock connection interface for prototype IEEE 1588 master clocks
TLDR
A fundamentally redesigned Global Navigational Satellite System (GNSS) receiver to master clock interface is presented based on the previous design for IEEE 1588 Precision Time Protocol (PTP) master clocks, optimized for modern timing GNSS receivers.Abstract:
In this paper we present a fundamentally redesigned Global Navigational Satellite System (GNSS) receiver to master clock interface based on our previous design for IEEE 1588 Precision Time Protocol (PTP) master clocks. The new design is optimized for modern timing GNSS receivers; including GPS, Galileo, and GLONASS GNSS; which provide better timing accuracy and precision than previous generic navigational or even older timing GPS receivers. The new design is required because new timing GNSS receivers have lower than 10 ns error while the errors introduced by the previous interface solution is one or two magnitudes bigger than that, causing degraded system wide timing performance for new systems. Better performance is achieved by an error source analysis and a delicate component selection based on the results of the analysis, and in addition, timing oriented PCB routing. Furthermore, the new design is more compact, integrated with a CPU board, and therefore, ready to be deployed in prototype applications. The paper also provides an initial performance evaluation of the improved reference clock interface.read more
Citations
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Proceedings ArticleDOI
Measurement System for the Performance Assessment of GNSS Receivers
TL;DR: The examination of potentially promising GNSS receivers is examined for which a custom measurement system is developed, which includes the design of a test PCB, the writing of a PC data collecting program, the formulation of MATLAB scripts which process the collected data, and the validation of the data collecting system via GNSS receiver simulated by TI evaluation boards.
Journal ArticleDOI
GNSS-Based System Time Synchronization Mechanism for Cyber-Physical Systems
TL;DR: The paper presents a system time synchronization mechanism of a Real-Time Operating System (RTOS) for loosely coupled distributed Cyber-physical Systems (CPS) such as distributed control systems connected with wireless networks or wide-area networks.
Proceedings ArticleDOI
Improved Measurement System for the Evaluation of GNSS Receivers for Timing Applications
TL;DR: A measurement system improved with time measuring capabilities is introduced and its theory of operation is described, which aims to create a low-cost IEEE 1588 master clock on an Open Hardware, Open Software basis to facilitate education and research.
References
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Reference BookDOI
Handbook of Antenna Technologies
TL;DR: Microwave radiometry is concerned with purely passive sensing of naturally generated microwave radiation of thermal origin this article, which is expressed in an apparent temperature called brightness temperature, whose concurrence is expressed by the objects' emission (absorption), reflection, and transmission properties and its true temperature.
Proceedings ArticleDOI
Effects of ground plane size on a square microstrip patch antenna designed on a low-permittivity substrate with an air gap
TL;DR: In this article, the effects of ground plane size on the characteristics of a square microstrip patch antenna designed on a low-permittivity substrate with an air gap were investigated.
Proceedings ArticleDOI
Synchronization performance evaluation of reference clock connection methods for IEEE 1588 master clocks
TL;DR: The paper investigates how master clock architectures, i.e., how the master clock is connected to the reference clock, influence price and performance; and in addition, it also details how the architecture effects installation and configuration requirements.
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