中国VLBI数据采集系统(CDAS)中若干关键IP Core的设计和实现
文献类型:学位论文
作者 | 吴亚军 |
学位类别 | 硕士 |
答辩日期 | 2009-06-09 |
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 | 项英 |
关键词 | VLBI宽带数字化终端系统 CDAS 数字算法 控制功能 FPGA |
其他题名 | The design and implementation of key IP Cores in Chinese VLBI Data Acqusition System(CDAS) |
中文摘要 | VLBI(Very Long Baseline Interformetry) is broadly used in radio astronomy, geodesy and spacecraft for its very high resolution. The digital broad band back-ends is one of the key equipments of the program of VLBI2010, and the research on this equipment has got some important results. The Shanghai Astronomical observatory has studied this subject for 3 years, and now get a prototype equipment, named CDAS(Chinese VLBI Data Acquisition System). In this article the design and implementation of digital controlling part and digital algorithm are discussed. In the first two chapters, the backgrounds of CDAS and some research results are introduced. In chapter 3, the FPGA used in this design and designing tools are introduced. The digital algorithm and its implementation in FPGA are discussed and some ideas used in the design are introduced in chapter4. In chapter 5, to obtain the controlling purpose, an embedded system whose hardware is mainly implemented in a FPGA is designed, and software program are written by C language. In chapter 6, the testing for the equipments are discussed, the results are analyzed, and the comparisons among CDAS, DBE(from USA) and EVN-DBBC(from Europe) are given. Finally a summary and some ideas of improvement are discussed in chapter 7. |
英文摘要 | 甚长基线干涉测量(VLBI)是重要的射电天文技术,具有极高的空间分辨率,广泛应用于天文、测地和深空探测器高定轨等领域。宽带数字化终端系统是VLBI2010发展计划的关键设备之一,目前国际上对该设备的研究取得了重要的成果。上海天文台也在进行相关设备中国VLBI数据采集系统CDAS(Chinese VLBI Data Acquisition System)的研究,成功研制了CDAS的第一个版本。本文讨论了CDAS中数字信号处理算法及其FPGA实现以及数字控制部分的设计和FPGA实现。 本文前两章介绍了CDAS研制的背景、国内外相关的研究情况和我们已有的工作基础。第三章介绍了所用的FPGA器件和开发工具。第四章讨论了CDAS的数字信号处理算法的设计和实现,介绍数字算法的每个模块的设计以及在FPGA中的实现。第五章介绍了数字控制部分的设计。根据控制功能的要求,设计一个嵌入式系统,通过软件和硬件合作的办法实现控制目标。第六章讲述了系统的测试以及取得的结果,并且就结果与国际同类型(EVN-DBBC、DBE)的设备做了比较。第七章就本文的工作做了一个总结,并且提出了一些改进的建议 |
语种 | 中文 |
公开日期 | 2011-07-01 |
页码 | 73 |
源URL | [http://119.78.226.72//handle/331011/14742] ![]() |
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 | 吴亚军. 中国VLBI数据采集系统(CDAS)中若干关键IP Core的设计和实现[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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