关于脉冲星参数的我国VLBI网测量  

Determination of Astrometric Parameters of Millisecond Pulsars via VLBI

作　　者：李金岭[1] 郭丽[1] 孙中苗[2] 

机构地区：[1]中国科学院上海天文台,上海市南丹路80号200030 [2]西安测绘研究所,西安市雁塔路中段1号710054

出　　处：《武汉大学学报（信息科学版）》2013年第4期386-389,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(10973030;11178024);探月工程(嫦娥二号;三号)资助项目;上海市科学技术委员会资助项目(06DZ22101)

摘　　要：根据毫秒脉冲星计时测量和深空导航应用的基本原理,分析了对脉冲星位置、自行和视差等天体测量参数的VLBI测量精度需求,讨论了我国VLBI网的现有观测能力和不足及可能的改进途径,包括天线后端配置、时钟同步和数据互相关处理等。The requirement of observation precision of pulsar astrometric ding the position, proper motion and parallax by VLBI technique is anal parameters inclu- yzed based on the fundamental principle of pulse timing observations and the application in deep space naviga- tion of millisecond pulsars. It is also discussed concerning the current technical specifica- tions, the deficiencies as well as the possible ways of improvement in the equipment of elec- tronic backend of antennas, the data cross-correlation processing and the time synchroniza- tion of the Chinese VLBI network on the observation of millisecond pulsars for criticism and reference.

关 键 词：毫秒脉冲星 TOA测量 深空导航 VLBI 

分 类 号：P228.6[天文地球—大地测量学与测量工程]