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Robust Detection of Fast and Slow Frequency Jumps of Atomic Clocks

机译:原子钟快速和慢速跳变的鲁棒检测

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摘要

This paper presents a frequency jump detector for atomic clocks. The detector considers both fast frequency jumps, which are abrupt variations of the clock frequency trend, and slow frequency jumps, which correspond to variations of the frequency trend over a finite time interval. These anomalies are particularly critical to space clocks in global navigation satellite systems (GNSSs). The developed detector is robust in the sense that it can deal with time-varying frequency trends, sinusoidal terms, outliers, and missing data. The detection performances are analyzed both analytically and numerically, and the effectiveness of the detector is shown by applying it to GNSS experimental data, as well as to simulated clock data.
机译:本文提出了一种用于原子钟的跳频检测器。检测器同时考虑快速跳频(这是时钟频率趋势的突然变化)和慢跳频(这与在有限的时间间隔内频率趋势的变化相对应)。这些异常对于全球导航卫星系统(GNSS)中的空间时钟特别重要。在可以处理时变频率趋势,正弦项,离群值和丢失数据的意义上,开发的检测器很坚固。对检测性能进行了分析和数值分析,并通过将其应用于GNSS实验数据和模拟时钟数据来显示检测器的有效性。

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