hydrogen maser

Development of miniature passive hydrogen maser at Shanghai Observatory

被动型小氢钟的研究进展

The supporting electronics system is an important part in the Hydrogen maser electronics.

氢脉泽的支持电子学系统是氢脉泽频率标准中电子学的一个重要组成部分，它包括脉泽的热控制、磁场控制、氢压以及调谐控制。

A type of small Hydrogen maser used for time-keeping is being developed in Shanghai Observatory.

一种守时用极小型氢脉泽频率标准正在上海天文台研制。

Some Characteristics of New Type of Hydrogen Maser Receiver in Shaanxi Astronomical Observatory

陕西天文台的新氢脉泽接收机的某些特点

The design and development of two-channel automatic frequency tuner for hydrogen maser cavity

双通道氢脉泽腔体频率自动调谐器的设计和制作

The Atomic Hydrogen Maser

原子氢脉泽

A new hydrogen maser for VLBI-network in China has been developed at Shanghai Observatory.

一种用来装备中国VLBI网络的新型氢脉泽标准已在上海天艺台研制成功。

Design and applications of the hydrogen maser h_6

氢脉泽&H6的设计和应用

Hydrogen Maser Auto-tuning System

氢脉泽自动调谐器

The ZEEMAN frequeney is one of important working parameters of hydrogen maser frequency standards, so a special digital time and frequency synthesizer, which is used to measure ZEEMAN frequencies, was developed.

ZEEMAN频率是氢脉泽时间频率标准的一个重要工作参数，为此上海天文台研制了一种专用的数字频率合成器，用来测量ZEEMAN频率。

Techniques used to Improve the Frequency Stability and Reliability of Hydrogen Maser

改善氢脉泽标准频率稳定度和工作可靠性所采用的技术

Shanghai Observatory developed successfully a kind of engineering model of hydrogen maser to be used on an engineering vehicle.

受有关方面委托，上海天文台于1991年研制成功一种车载式工程型氢原子钟。

The hydrogen maser is the most stable frequency standard generally available today for all but the shortest measuring times. For long measuring times of 10 4s or longer, its performance typically deteriorates due to frequency drift of high Q resonant cavity.

氢脉泽是至今为止除极短时间测量间隔之外最稳定的频率标准，对于104s或更长的测量时间间隔，它的性能由于高Q值谐振腔而引起频率漂移而变坏。

This paper describes the design and manufacture of the titanium vacuum bell jar and the improvement of the fore pump system for Shanghai Observatory's hydrogen maser.

本文介绍了氢钟钛合金钟罩的设计制作以及机械泵&分子泵前级真空机组的改进设计。

A Study on the Hydrogen Maser with Cavity Auto-tuning

腔体自动调谐氢脉泽的研究

The analysis of the small hydrogen maser cavity

小型氢脉泽谐振腔的研究

This paper describes a measurement method for experimental estimating oscillation parameter q of hydrogen maser.

本文介绍一种实验估算氢脉泽振荡参数q的测量方法。

The improvement of the performance of the hydrogen maser clock at Shanghai Observatory in recent years

近年来上海天文台氢钟性能的改进和提高

An Experimental Study for the Compact Hydrogen Maser with a TE_ ( 111) Septum Cavity

小型TE（111）无泡隔膜腔氢脉泽的实验研究

The atomic hydrogen maser is the most stable frequency standard allshortest measuring time interval.

氢脉泽是一种中、长期稳定度最高的原子频率标准.

Miniature passive hydrogen maser is developed at Shanghai observatory.

介绍了上海天文台被动型小氢钟的研制进展，给出了当前的测试结果。

Experimental Estimation of Hydrogen Maser's Oscillation Parameter q and Diagnostic Technique of Hydrogen Maser

氢脉泽振荡参数q的实验估算及氢脉泽诊断技术

The Uses Development and Improvement of the Hydrogen Maser in Shanghai Observatory

上海天文台氢原子钟的使用、研究和改进

The Majorana transition and the beam optics configuration are analysed for the purpose of designing the hydrogen maser state selector.

分析了氢脉泽中Majorana跃迁和双聚焦束光学系统。

Improvement of Tuning Cavity of Hydrogen Maser

氢脉泽调谐方法的改进

Grade. the improvement of the bell jar and the fore pump system for Shanghai observatory's hydrogen maser

氢钟钟罩及前级真空机组的改进设计

Frequency-Temperature Effects Analysis on Hydrogen Maser Microwave Cavity

氢脉泽谐振腔频率-温度效应分析

Miniature passive hydrogen maser is developed at Shanghai Observatory cavity design and square wave frequency modulation.

介绍了上海天文台被动型小氢钟的设计和研制,给出了初步的测试结果.

Atomic hydrogen maser frequency stability measurement system

氢脉泽频率稳定度测量系统