Recently result on passive hydrogen maser of SHAO by single frequency modulation

2012 European Frequency and Time Forum Pub Date : 2012-04-23 DOI:10.1109/EFTF.2012.6502335

Tiexin Liu, Wenqing Xu, W.X Chen, J.Y Dai, Y. Zhang, Y. Xie, C. Lin

引用次数: 0

Abstract

This paper introduces recently result on passive hydrogen maser of shanghai Astronomical Observatory by single frequency modulation. Digital servo system and analog servo system have been experimented. DDS is used to generate frequency modulation in the RF interrogation chain in both systems. The algorithm separating two errors is used in digital system. The traditional integrator and digital phase shift are used in analog system. An Allan standard deviation of two systems has been tested based on same physical part. Both of them have achieved at σy(τ) < 1×10⁻¹²τ^−1/2 (1s≤τ≤10000s) and σy (day) <2×10p⁻¹⁴.

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单频调制被动氢激射器的最新研究成果

本文介绍了上海天文台单频调制被动氢脉泽的最新成果。实验了数字伺服系统和模拟伺服系统。DDS用于在两个系统的射频询问链中产生频率调制。该算法用于数字系统中。模拟系统采用传统的积分器和数字相移。基于同一物理部件，测试了两个系统的Allan标准偏差。两者均达到σy(τ) < 1×10−12τ−1/2 (1s≤τ≤10000s)和σy(day)−14。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 European Frequency and Time Forum

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