VLBI技术CONT观测的高频ERP解算  

Solution of High Frequency Earth Rotation Parameters Determined During CONT Campaigns of VLBI

作　　者：孙靖[1,2] 平劲松[1] 郝万宏[1,3] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]北京航天飞行控制中心,北京100094 [3]北京跟踪与通信技术研究所,北京100094

出　　处：《测绘科学技术学报》2009年第6期395-398,共4页Journal of Geomatics Science and Technology

摘　　要：国际VLBI测天测地服务机构(IVS)已组织了多次VLBI连续加密观测(CONT),提供了高精度连续的原始观测数据,在地球自转参数(ERP)的连续高频解算中起到积极的作用,揭示了地球自转高频变化的观测资料和理论模型之间的差异,有助于进一步解析其激发机制改进模型。这里使用VLBI资料处理软件系统OCCAM处理了CONT02,CONT05和CONT08数据;并进行ERP高频解算及频谱分析。从各次CONT观测的残差频谱中发现较强周期信号,反映了地球自转的特性。特别是CONT08残差频谱中存在明显的周日项信息,揭示了北半球夏季月份大气激发对地球自转的作用。Starting in 1994, a series of the very successful continuous VLBI campaigns （CONT） have been organized at irregular intervals. One of the main scientific goals of these sessions is to generate continuous subdaily Earth rotation parameters （ERP） in order to uncover discrepancies between theoretical models and observations. The results of Earth rotation data derived from VLBI campaign CONT02, CONT05 and CONT08 using OCCAM were presented. It proved the stronger diurnal variation in polar motion from VLBI campaign CONT08 was the result of atmospheric excitation.

关 键 词：甚长基线干涉测量 连续加密观测 地球自转参数 高频 OCCAM软件 

分 类 号：P228[天文地球—大地测量学与测量工程]