Q增强型氢钟环路相位与腔Q稳定技术研究
文献类型：学位论文
| 作者 | 刘嘉阳 |
| 学位类别 | 硕士 |
| 答辩日期 | 2009-06-08 |
| 授予单位 | 中国科学院上海天文台 |
| 授予地点 | 上海天文台 |
| 导师 | 林传富 |
| 关键词 | Q增强型氢钟 正反馈电路 单片机 CPLD |
| 中文摘要 | Hydrogen Maser is the extremely high-performance time and frequency standard, which all terms of performance are excellent. It has played an important role in the fields of the fundamental theory, navigation, radar, geodesic survey, astronomical observation, communication etc. The traditional Hydrogen Maser has extremely high-performance time and frequency standard, but it is too big for space use. With the development of the space science technology, compact and portable hydrogen maser with high performance is in great demand. The main content of this thesis is to design a positive feedback circuit of the Q-enhanced hydrogen maser with a stable loaded Q and a stable feedback phase. This thesis first gives a brief introduction to the theory of the compact hydrogen maser and the Q-enhanced hydrogen maser. And then introduce the principle of the PID controller. Based on the theoretical analysis, it computes the parameters of demanded components and makes selections accordingly. Chapter 3 and Chapter 4 give a detailed account of hardware and software design process. After many times of test and a long time of verification, we give the final test results of the system as well as analysis in Chapter 5. The results indicate that the newly designed system has accomplished prospective purpose, and some parameters has surpassed prospective index. At last, the thesis gives some of my suggestions about the followed improvement of the system. |
| 英文摘要 | 随着经济的发展以及卫星技术的进步，近年来卫星导航系统在全球越来越广泛的应用。我国也建立了具有自主知识产权的区域性卫星导航系统，北斗卫星导航定位系统。为了进一步建立北斗卫星导航定位系统，性能更高、重量更轻、工作更稳定的原子频标不可或缺。现在北斗系统的星载频标为铷钟，其性能指标还有一定的不足，选用性能指标更好的小型氢原子频标是目前重要的研究课题。 本文基于现代控制理论与先进的电子技术设计了一种具有腔Q值及反馈环路相位稳定特性的Q增强型氢钟的正反馈电路；使Q增强型氢钟能够长期稳定的工作并进一步向实用化方向发展，成为真正可以使用的高性能、体积小、重量轻的工程化原子频标。 本文首先分析了Q增强型氢钟正反馈电路的基本工作原理，并对PID控制器原理进行了阐述。在第三章和第四章详细介绍了硬件和软件的设计过程。在对整个电路进行反复的调试以及检测后，在第五章给出系统的测试结果和分析，测试结果达到预期目标。文章最后给出了未来设计改进的一些想法。 |
| 语种 | 中文 |
| 公开日期 | 2011-07-01 |
| 页码 | 50 |
| 源URL | [http://119.78.226.72//handle/331011/14744]  |
| 专题 | 上海天文台_中国科学院上海天文台学位论文 |
| 推荐引用方式 GB/T 7714 | 刘嘉阳. Q增强型氢钟环路相位与腔Q稳定技术研究[D]. 上海天文台. 中国科学院上海天文台. 2009. |
入库方式： OAI收割
来源：上海天文台
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