利用DiFX处理CVN天文观测数据进展  

The Progress of Adapting DiFX Correlator for Chinese VLBI Network

作　　者：江悟[1,2,3] 沈志强[1,2] 舒逢春[1,2] 郭丽[1] 闫振[1,2] 陈中[1,2] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]中国科学院射电天文重点实验室,上海200030 [3]中国科学院大学,北京100049

出　　处：《天文学进展》2014年第4期516-524,共9页Progress In Astronomy

基　　金：上海天文台重点项目(287151002);国家自然科学基金(11003039;11173046)

摘　　要：相关处理机是VLBI观测数据处理的核心单元,相关处理机的输出结果可以直接作为天文成图、测地学以及航天器干涉测量等应用的输入。DiFX是运行在分布式计算、共享存储单元的集群环境下最成功的软件相关处理机之一。首先介绍上海天文台DiFX综合平台的现状;然后介绍利用DiFX相关处理机处理中国VLBI网(CVN)天文观测数据的进展:最后简短展望了DiFX平台为CVN及国际VLBI天文观测提供相关处理服务的前景。可为利用该平台的相关处理结果开展科学研究提供参考。The correlator is crucial in the data processing of VLBI observations. Its output can be used for astronomical imaging, reduction of geodetic measurements and radiometry of spacecraft. DiFX is a well-known software correlator operating in a distributed computing and shared memory environment. The status of the DiFX platform in Shanghai Astronomical Observatory and its progress in the correlation of CVN sessions were reported in the paper. The platform can be used for data correlation of CVN and international VLBI observations. We hope this report could provide some valuable reference to the researchers related.

关 键 词：射电天文 VLBI DiFX 脉冲星 测地学 

分 类 号：P228.6[天文地球—大地测量学与测量工程]