CVN高速数据记录与回放硬盘系统及其应用  

CVN HIGH-SPEED DATA RECORDING & PLAYBACK HARDDISK SYSTEM AND ITS APPLICATIONS

作　　者：郑为民[1] 张秀忠[1] 陈中[1] 朱人杰[1] 卢春梅[1] 舒逢春[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》2004年第25期112-119,共8页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：中国VLBI网二期工程和国家 86 3计划支持

摘　　要：CVN硬盘系统是上海天文台VLBI技术实验室自行研制的VLBI数据高速记录与回放系统。它以通用PC机和Linux操作系统为平台。该系统与原有磁带机系统相比具有数据记录质量高、可靠性好和价格低等特点 ,已安置在乌鲁木齐南山、上海佘山观测站和昆明流动站 ,多次成功地进行了卫星和河外射电源的观测。目前中国VLBI网观测的数据记录和回放已全部由CVN硬盘系统承担 ,完全替代了原有的磁带系统。现有的上海相关处理机通过专用回放接口 ,能直接处理记录在硬盘上的数据。在此基础上还进行了软件相关处理方法和e VLBI数据传输实验。通过多次观测 ,该系统的性能已得到不断改进 ,将成为我国“嫦娥一号”探月工程中的VLBI数据系统的候选者 ,也可应用于其它高速数据记录领域。A PC-based high-speed VLBI data recording and playback unit named CVN harddisk system was developed at Shanghai Astronomical Observatory recently. Three CVN harddisk systems were installed at Sheshan station, Nanshan station and Kunming mobile station respectively to replace the tape recording systems for the domestic observations. Several satellites positioning VLBI observations as well as e-VLBI observations were finished based on the CVN harddisk system. The harddisk system is able to do some data quality and time code checks by itself. The Shanghai correlator correlated the data from the harddisk system through a special playback interface. The correlator software was also developed based this system. This harddisk system could be used in the Chinese Lunar Explorer navigation and other high-speed data acquisition applications in the future.

关 键 词：VLBI 磁盘阵列 高速数据采集 实时 PCI总线 月球探测 

分 类 号：P228.6[天文地球—大地测量学与测量工程] TP33[天文地球—测绘科学与技术]