天文学进展2012，Vol.30Issue(2)：236-245,10.
射电天文高速数据采集与处理平台的设计与应用
The Design and Application of High Speed Data Acquisition and Processing Platform for Radio Astronomy
摘要
Abstract
Different applications need different equipments. The constructions of these equipments are mostly similar while parameters are different. So it is possible to design a general purpose hardware platform for these applications. After that we only need to download different software according to the application. The platform described in this paper is designed for multi-purpose. It is based on cPCI bus interface and composed of a broadband ADC which can achieve 2G samplings per second and several high performance FPGAs used for controlling and data processing. Considering the capability of the driver, a special construction is adopted between the ADC and FPGAs responsible for data processing. Also the theoretical analysis of the reasons is made in the paper. Several applications are described in the paper, such as CDAS (Chinese Data Acquisition System) used in VLBI, pulsar receiver and autocorrelation spectral analyzer used in single dish applications. One of them is applied and others are developing now. These applications are just for example but not limited to.关键词
射电天文/通用/宽带/高速Key words
radio astronomy/ general/ broadband/ high speed分类
天文与地球科学引用本文复制引用
朱人杰,项英,吴亚军,罗近涛,张秀忠..射电天文高速数据采集与处理平台的设计与应用[J].天文学进展,2012,30(2):236-245,10.基金项目
国家自然科学基金(11103066) （11103066）
