In a move to enhance the precision and reliability of GNSS timing products, u-blox has announced the integration of Switzerland's UTC-traceable timing infrastructure into its GNSS test laboratory in Thalwil. The collaboration with METAS, the Swiss Federal Institute of Metrology, and Switch, the operator of Switzerland's national research and education network, provides u-blox with direct access to a continuous and documented chain of calibrations against UTC(CH), Switzerland's contribution to Coordinated Universal Time.
This integration is critical because GNSS timing technologies depend on precise synchronization and validation against trusted references. By bringing the national time standard directly into its lab, u-blox can now rapidly validate new hardware and software releases for GNSS timing receivers without relying on external metrology facilities. The setup also enables long-term stability measurements over weeks to months, which is essential for the development of next-generation timing products.
Samuli Pietilä, Director of Product Line Management for Timing and Infrastructure at u-blox, emphasized the importance of rigorous validation: "High-performance GNSS timing products depend on rigorous and traceable timing validation throughout the development cycle. This infrastructure allows us to validate and continuously improve GNSS timing receiver performance directly in our own laboratory against a UTC-traceable reference."
The technology enabling this precision is White Rabbit, an Ethernet-based synchronization method originally developed at CERN for large-scale scientific infrastructure. White Rabbit provides sub-nanosecond synchronization over fiber-optic networks, and its adoption is growing in advanced industrial and scientific environments. Switch operates the fiber-optic network over which the timing signal is disseminated to u-blox's lab.
Jacques Morel, Head of the Laboratory Photonics, Time and Frequency at METAS, highlighted the broader significance: "This collaboration demonstrates how national metrology infrastructure can support advanced industrial applications requiring highly accurate synchronization, timing precision, and traceable validation against UTC references."
The integration is now operational and will support ongoing development and validation activities. It underscores the strength of Switzerland's precision technology ecosystem, combining metrology expertise, optical timing infrastructure, and advanced GNSS technologies. For industries relying on GNSS timing—such as telecommunications, financial trading, and power grid synchronization—this could lead to faster innovation and higher reliability in timing solutions.
The collaboration also signals a trend where national standards are becoming more accessible to industry, potentially accelerating the deployment of precise timing technologies in critical infrastructure. As GNSS timing becomes increasingly vital for modern networks and systems, having traceable validation tools in-house could reduce development cycles and improve product quality.
u-blox's integration of the METAS time service is a step forward in ensuring that timing products meet the highest accuracy standards, which is essential for applications where even nanosecond discrepancies can have significant consequences.
