2014 European Frequency and Time Forum (EFTF)最新文献_第7页

Progress of ultra-stable frequency dissemination and synchronization in free space 自由空间超稳定频率传播与同步研究进展

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331496

J. Miao, B. Wang, C. Gao, Y. Bai, X. Zhu, L. J. Wang

引用次数: 0

Main construction features of the on board active hydrogen maser for Radioastron mission 用于Radioastron任务的机载主动氢脉泽的主要结构特征

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331519

A. G. Utkin, A. Beliaev, Y. Pavlenko

引用次数: 1

Industrialisation approach of the pop atomic clock for application to GNSS 流行原子钟应用于GNSS的工业化方法

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331526

A. Battisti, A. Cosentino, A. Sapia, M. Gioia, A. Borella, A. Godone, F. Levi, C. Calosso, S. Micalizio

{"title":"Industrialisation approach of the pop atomic clock for application to GNSS","authors":"A. Battisti, A. Cosentino, A. Sapia, M. Gioia, A. Borella, A. Godone, F. Levi, C. Calosso, S. Micalizio","doi":"10.1109/EFTF.2014.7331526","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331526","url":null,"abstract":"The POP clock is a vapor cell frequency standard operating in pulsed regime at the Rb ground-state hyperfine frequency (6834 MHz). Selex ES' interest in this technology relies on the possibility to implement a compact unit, with reduced mass, size and power consumption compared to the Passive Hydrogen Maser (PHM, the primary clock of Galileo Navigation Constellation), but similar frequency stability and less operation constraints. A first feasibility study [1] under an ASI contract, was concluded in 2009 with the definition of a preliminary design for space use. Further studies were carried out at INRIM under an ESA contract and with the partnership of Selex-ES (SES). It was demonstrated that the optical detection simplifies the design and improves the frequency stability to values fully compliant to the Galileo specifications for the PHM. This paper presents a summary of the main results achieved by INRIM [2], and the industrialization approach required to pass from the laboratory prototype of the clock to an engineering model designed for the use on navigation satellites. The first step of the development plan will address the realization of electronic and optical units based on commercial components with either space heritage or ability to be space qualified.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130584137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Recent achievements in performance of 100 MHz crystals and OCXOs 100兆赫晶体和ocxo性能的最新成就

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331512

Y. Vorokhovsky, Vladimir Lyaskovsky, Yaroslav E. Kolpakov, A. Nikonov, A. Kotyukov

引用次数: 1

Measurement of the static scalar polarizability of the 88Sr+ clock transition 测量 88Sr+ 时钟转变的静态标量极化性

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331531

P. Dubé, A. Madej, M. Tibbo, J. Bernard

引用次数: 3

Towards an 27Al+ ions optical clock 向着27Al+离子光学时钟的方向

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331525

Zetian Xu, Xiaoyi Zeng, Xiaohui Shi, H. Che, K. Deng, Jie Zhang, Zehuang Lu

引用次数: 0

A compact, versatile, miniature timing microsystem using two co-integrated wafer-level packaged silicon resonators 一个紧凑，多功能，微型定时微系统，使用两个协集成的晶圆级封装硅谐振器

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331529

D. Ruffieux, N. Scolari, T. Le, P. Beuchat, A. Jaakkola, T. Pensala, J. Dekker, P. Dixit, C. Manier, K. Zoschke, H. Oppermann

引用次数: 2

Investigation of GeO2 thin film properties for improvement of temperature coefficient of frequency of SAW devices 提高SAW器件频率温度系数的GeO2薄膜性能研究

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331484

M. Knapp, P. Jager, Markus Hauser, U. Rosler, W. Ruile, G. Scheinbacher, M. Honal, I. Bleyl, L. Reindl

引用次数: 3

Link calibration against receiver calibration time transfer uncertainty when using the Global Positioning System 使用全球定位系统时，根据接收机校准时间传递不确定度进行链路校准

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331534

G. Rovera, M. Abgrall, P. Uhrich, J. Torre, C. Courde, M. Laas-Bourez, R. Sherwood

{"title":"Link calibration against receiver calibration time transfer uncertainty when using the Global Positioning System","authors":"G. Rovera, M. Abgrall, P. Uhrich, J. Torre, C. Courde, M. Laas-Bourez, R. Sherwood","doi":"10.1109/EFTF.2014.7331534","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331534","url":null,"abstract":"We present a direct comparison between two different techniques for the relative calibration of time transfer between remote time scales when using the signals transmitted by the Global Positioning System (GPS). In the remote sites, the local measurements are driving either the computation of the hardware delays of the local GPS equipment with respect to a given reference GPS station, a “receiver” calibration, or the computation of a global hardware offset between two distribution reference points of the remote time scales, a “link” calibration. Both techniques do not require the same measurements on site, and we discuss the uncertainty budget computation differences. We report on one calibration campaign organized during Autumn 2013 between Observatoire de Paris (OP), Paris, France, Observatoire de la Côte d'Azur (OCA), Plateau de Calern, France, and NERC Space Geodesy Facility (SGF), Herstmonceux, United Kingdom. We show the different ways to compute uncertainty budgets, leading to improvement factors of 1.2 to 1.5 on the hardware delay uncertainties when comparing the relative link calibration to the relative receiver calibration.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127626877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

SAW temperature sensors for electric power transmission lines 用于输电线路的SAW温度传感器

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331452

K. Stroganov, Timofey Kronidov, Boris Luylin, V. Kalinin, V. Plessky

引用次数: 8