USB-VLBI综合快速确定环月飞行器短弧轨道  

Joint Short Arc Orbit Determination of Lunar Satellite with USB-VLBI

作　　者：王宏[1] 董光亮[1] 胡小工[2] 黄勇[2] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]中国科学院上海天文台,上海200030

出　　处：《测绘科学技术学报》2007年第2期100-103,共4页Journal of Geomatics Science and Technology

基　　金：国家重大科研工程绕月探测工程支持

摘　　要：2006-05-29-2006-06-02,有关单位利用欧空局（ESA）的SMART-1环月飞行器进行了USB-VLBI综合测定轨试验,其中一个重要目标就是考察环月飞行器的短弧快速轨道确定能力。这里对综合测轨数据的精度进行了评估,分析了不同类型测轨数据组合和定轨弧长对短弧定轨和预报的影响。利用5 d测量数据进行统计：VLBI时延的RMS约为1 m,时延率的RMS约为0.25 cm/s,USB测速的RMS约为3-6 cm/s,测距的RMS约为1-3 m。30 min定轨及预报一个环月轨道周期（5 h）位置的RMS约为250 m,速度的RMS约为15 cm/s。Because the orbit of SMART-1 satellite is similar to Chang＇ e-Ⅰ mission orbit, the test on USB-VLBI＇ s joint tracking of SMART-1 was carried out from May 29 to June 2, 2006. By use of GEODYN Ⅱ orbit determination software, we investigate the quality of data, analyze the effect for short arc orbit determination in lunar orbit with different data combination types and orbit determination arcs. Based on the 5 days data, it shows that the RMS of the residuals of VLBI delay data is about 1 m, the RMS of the residuals of VLBI delay rate data is about 0.25 cm/s, the RMS of the residuals of range data is about 1 - 3 m and of doppler data is about 3 - 6 cm/s. It also shows that, after 5 hours, the RMS of the position error is about 250 m and of the velocity error is about 15 cm/s by combining USB-VLBI in 30 minutes.

关 键 词：综合轨道确定 统一S波段系统(USB) 甚长基线干涉仪(VLBI) 系统误差 

分 类 号：P228[天文地球—大地测量学与测量工程]