OPENTTP

OpenTTP - hardware and software for traceable time and frequency... The Open Traceable Time Platform is an open-source solution for a timing system that can be made fully traceable to national standards. It achieves traceability using the GPS common-view technique, which allows distant clocks to be compared with an accuracy of a few ns. The reference platform is based on readily available, low-cost OEM modules and provides a full software and hardware solution.