2014 European Frequency and Time Forum (EFTF)最新文献_第5页

Digital-locking optically pumped cesium magnetometer 数字锁定光泵浦铯磁力计

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331448

Rongye Shi, Chang Liu, Sheng Zhou, Yanhui Wang

引用次数: 3

Remote steering of OCA local time scale using UTC(OP) 基于UTC(OP)的OCA地方时标远程控制

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331538

M. Laas-Bourez, E. Samain, C. Courde, D. Rovera, M. Abgrall, B. Chupin, P. Guillemot

引用次数: 1

A comparative study of LGS coefficient set accuracy assessed by experiments 实验评定LGS系数集精度的比较研究

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331474

B. François, G. Martin, D. Richter, S. Sakharov, J. Friedt, Z. Davis, S. Ballandras

引用次数: 3

Ultra-wide-band SAW RFID/sensors 超宽带SAW RFID/传感器

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331416

V. Plessky, M. Lamothe

{"title":"Ultra-wide-band SAW RFID/sensors","authors":"V. Plessky, M. Lamothe","doi":"10.1109/EFTF.2014.7331416","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331416","url":null,"abstract":"During 2-year project “SAWtag” supported in frames of French program “Chaıre d'Excellence” a SAW tag and sensor system operating in the Ultra-Wide-Band (UWB) frequency range has been developed. Often SAW tags and sensors operate in 2.44 GHz ISM band using relatively narrow bandwidth B= 82.5 MHz. The characteristics of these devices can be improved using UWB technology. We have developed two prototype devices operating in 200MHz-400 MHz and 2000MHz-2500 MHz UWB frequency ranges. A UWB interrogating device (the “reader”) operating in continuous wave radar mode for 2.0-2.5 GHz range was developed and manufactured by T. Ostertag. The remote measurements show compressed RF pulses of about 2 ns duration, which include unique RF filling of a few sinusoids with amplitude modulation. Precise measurement of the pulse position is possible by correlation methods, avoiding the phase ambiguity problem. The temperature is measured with a precision of about 0.1 °C. This correlation method works even in an environment with strong reflections from metal objects. The short compressed pulses allow measuring a number of sensors simultaneously. For tag application, we measure and identify three different tags at the same time without a collision problem, and this number can easily be greatly increased. Using of Hyperbolically Frequency Modulated (HFM) signals in SAW-tags is also discussed. A UWB SAW-tag with extremely small chip size (0.8mm × 2.1 mm) has been demonstrated. We also briefly discuss the development of 6GHz SAW-tags.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"43 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":"133108187","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

Aging study on a micro-fabricated Cs buffer-gas cell for atomic clock applications 原子钟用微晶碳化硅缓冲气体电池的老化研究

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331459

S. Abdullah, C. Affolderbach, F. Gruet, G. Mileti, Y. Petremand

引用次数: 0

Ultra-stable Mid-IR quantum cascade laser for high-resolution spectroscopy and metrology 用于高分辨率光谱和计量的超稳定中红外量子级联激光器

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331475

S. Mejri, P. Sow, S. Tokunaga, O. Lopez, A. Goncharov, B. Argence, C. Chardonnet, A. Amy-Klein, C. Daussy, B. Darquié

引用次数: 0

Development and applications of a traceable time-transfer system 可追溯时间传递系统的开发与应用

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331435

M. Wouters, L. Marais, P. Fisk, R. B. Warrington

引用次数: 3

Atomic clocks continuous development at Selex ES for GNSS Selex ES为GNSS持续开发原子钟

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331520

A. Battisti, Simone Beretta, A. Cecchini, M. Gioia, A. Borella

{"title":"Atomic clocks continuous development at Selex ES for GNSS","authors":"A. Battisti, Simone Beretta, A. Cecchini, M. Gioia, A. Borella","doi":"10.1109/EFTF.2014.7331520","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331520","url":null,"abstract":"On-board atomic clocks represent the key technology for the success of any satellite navigation system mission. The Passive Hydrogen Maser (PHM) has been selected as master clock of the Galileo Navigation Payload and three years of continuous observation on board of GIOVE-B satellite has confirmed the outstanding performance in terms of frequency stability and negligible drift. Results coming from ground life testing have given important feedbacks on the PHM technology capability to comply with the required 12 years of lifetime. The above was the starting point for the development of other Atomic Clocks solutions like POP Rubidium clock and Mini PHM (mPHM). The main target is to preserve the excellent PHM frequency stability performance with a reduction of the overall mass and power consumption. Selex ES have started activities in the area of atomic clocks for navigation back in 2000 with the development of the PHM for Galileo. In 2005 the first qualification model was successfully tested making it possible to fly the first PHM on board GIOVE-B in 2008. Today 32 FM models have been delivered to the Galileo constellation and eight of them are flying on board IOV satellites. This paper presents an overview of the atomic clocks time stability central role in a Navigation Satellite System mission, an overview of POP and mPHM main performances and characteristics, the topics of the Selex-ES industrial approach leading to the industrialization of PHM clocks for space and the establishment the manufacturing and testing facilities at Nerviano premises.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"3 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":"129253067","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: 0

Wideband, low noise and low spurious agile direct frequency synthesis based on combination of SAW oscillator and high speed DAC 基于SAW振荡器和高速DAC的宽带、低噪声、低杂散敏捷直接频率合成

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331508

J. Lesage, Adrien Capaine, Jean-François Penn, G. Jestin

引用次数: 1

Progress on a cascaded optical link between Paris and Strasbourg 巴黎和斯特拉斯堡之间的级联光纤链路进展

2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331499

O. Lopez, N. Chiodo, F. Wiotte, N. Quintin, A. Bercy, C. Chardonnet, A. Amy-Klein, F. Stefani, P. Pottie, G. Santarelli

引用次数: 0