| Multi-Channel Beat-Frequency Digital Measurement System for Frequency Standard | |
| Liu, Ya; Li, Xiao-Hui; Wang, Yu-Lan | |
| 2009 | |
| 会议名称 | Joint Meeting of the 23rd European Frequency and Time Forum/IEEE International Frequency Control Symposium |
| 会议录名称 | 2009 JOINT MEETING OF THE EUROPEAN FREQUENCY AND TIME FORUM AND THE IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM, VOLS 1 AND 2 |
| 会议日期 | APR 20-24, 2009 |
| 会议地点 | Besancon, FRANCE |
| ISSN | 1075-6787 |
| 产权排序 | 1 |
| ISBN | 978-1-4244-3511-1 |
| 摘要 | A multi-channel Beat-Frequency Digital Measurement system (BFDMS) using digital signal processing method has been developed and operated in NTSC. The system can high-precision analyze and monitor high-stability frequency sources. It, consists of three independent measuring channels what can be operated simultaneously and one calibrating channel to correct the systematic error. This result that the measured noise floor Allan deviation is approximately 3e-14 at one second has been approved in System test. The key technique is the digital correlation algorithm that has been designed to reduce the effecting of beat-frequency device noise floor on measurement accuracy. So the limit factor of improving measurement precision that is brought by circuit noise of beat-frequency technology has been solved. The algorithm can calculate phase difference either. To improve ability of measurement, the system has a calibration channel what is designed to remove the systematic error. In this channel, the known reference frequency can be used to deduce systematic error. And then this result will be used to modify the value of measurement channels. The principles of operation, and error analysis have been verified will be introduced in detail in this article. |
| 部门归属 | 时间频率测量与控制研究室 |
| 主办者 | Conseil Reg Franche Comte, Ville Besancon, NIST, IEEE, UFFC Soc, Jet Propuls Lab, Symmetricom, OEwaves, Vectron, Conseil Gen Doubs, Communaute Agglomerat Grand Besancon, Univ Franche Comte, Minist Rech & Enseignement Superieur, Soc Francaise Microtech & Chronometrie, Frequency Elect |
| 收录类别 | CPCI |
| 语种 | 英语 |
| 文献类型 | 会议论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/5378 |
| 专题 | 时间频率测量与控制研究室 |
| 推荐引用方式 GB/T 7714 | Liu, Ya,Li, Xiao-Hui,Wang, Yu-Lan. Multi-Channel Beat-Frequency Digital Measurement System for Frequency Standard[C],2009. |
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