Frequency Standards, Timekeeping, and Traceable Services at the National Research Council of Canada

摘要

Canadian frequency metrology services and Canada's official time services are both provided by the National Research Council of Canada (NRC). NRC designs, builds, and operates a group of laboratory frequency standards, both primary cesium clocks and hydrogen masers. It disseminates the results as both time and traceable frequency. NRC has an active research and development program in time and frequency technology: on frequency standards (microwave and optical) and on calibration and dissemination techniques with complete uncertainty budgets. Its present and planned capabilities are presented and discussed.