A new method of uncertainty analysis for non-white noise is presented and used to evaluate traceable holdover capabilities of a new NRC system for time and frequency dissemination to remote rubidium-cell (Rb) clocks. As in many similar systems, these remote clocks are disciplined to track UTC using the Global Positioning System and the common view time transfer method. When disciplining data is unavailable, we extend traceability into this holdover period with evaluations of uncertainty from the measurements of the Rb clock’s non-white noise: modelled, matched, and simply presented as a time dependent dispersion in Monte Carlo simulations. This leads to improved simplicity, reliability and economy for the new method, with a post processed standard uncertainty down to 6ns when disciplined, with a holdover period of t seconds introducing an uncertainty component of 1.82 10⁻³ t nanoseconds (combined standard uncertainty of 160ns for a 24 h holdover).

提出了一种非白噪声不确定性分析的新方法，并用于评估新 NRC 系统的可追溯保持能力，以便将时间和频率传播到远程铷电池 (Rb) 时钟。与许多类似系统一样，这些远程时钟被训练为使用全球定位系统和通用视图时间传输方法来跟踪 UTC。当规范数据不可用时，我们通过评估 Rb 时钟非白噪声测量的不确定性将可追溯性扩展到此保持期：建模、匹配并简单地呈现为蒙特卡罗模拟中的时间相关色散。这提高了新方法的简单性、可靠性和经济性，后处理标准不确定度低至 6ns，保持期为t秒引入 1.82 10 ^-3 t纳秒的不确定性分量（24 小时保持的标准不确定性组合为 160ns）。