Metrologia · 2008 · 13 citations · 1 references
EngineeringElectrical EngineeringInstrumentationMicrowave EngineeringTime Series AnalysisAtomic ClocksClock ManagementClock SynchronizationFrequency MetrologyTime SynchronizationTime-frequency AnalysisAtomic Clock SteeringCesium Fountain ClocksClock GenerationHydrogen Maser ClocksMaser SpectroscopyPrimary Frequency StandardsReference Clock SelectionSteering
TA(NIM) is being updated now. The new TA(NIM) uses an active hydrogen maser as a reference clock, and the frequency of TA(NIM) is steered by an algorithm to keep it the same as the NIM4 fountain clock, which is NIM's primary frequency standard. This paper introduces the generation of new TA(NIM), including the equations to predict maser frequency and the steering algorithm. The time difference and the frequency difference between the new TA(NIM) and UTC are also reported.
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