摘要
推导了基于相对论时空理论的'嫦娥一号'地月转移轨道段差分VLBI(ΔVLBI)的数学模型,在此基础上利用'嫦娥一号'实测的VLBI时延观测量和模拟的河外射电源时延观测量组成了ΔVLBI时延观测量,在参数最优先验精度下解算了不同弧段长度的'嫦娥一号'轨道及地球定向参数(EOP)等未知参数,并根据各参数的解算精度及外符合程度确定了最优观测弧段长度,并分析了该条件下的参数解算精度。
A relativistic differential VLBI （AVLBI） mathematical model for CE-1 in EarthMoon transfer orbit is derived. Based on the model, AVLBI time delay observations are formed by differencing CE-1 time delay observations with a simulated radio source＇s time delay observations. Then unknown parameters including orbit of CE-1 and Earth Orientation Parameters （EOPs） are estimated under the least squares adjustment, in optimal parameter apriori accuracy, and the best arc length is determined according to the inner and externally coincident accuracy of each parameter. Finally, the accuracy of each parameter is given.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2012年第8期960-962,975,共4页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2008AA12Z308)
国家自然科学基金资助项目(40974003)
