嫦娥二号卫星X波段测控体制试验定位分析  

Positioning Analysis of Observations from X-Band Monitoring and Control System Experiments in the Chang'E-2 Project

作　　者：李金岭[1] 刘鹂[1] 乔书波[2] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]信息工程大学测绘学院,河南郑州450052

出　　处：《测绘科学技术学报》2011年第2期84-87,共4页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金资助项目(10973030;10903032);嫦娥二号任务;上海市科学技术委员会基金资助项目(06DZ22101);国家863计划资助项目(2008AA12A209;2008AA12A210)

摘　　要：2010-10-03~2010-10-04,在嫦娥二号任务实时观测阶段进行了X波段测控体制试验。从定位归算角度对试验期间的S波段数传信号（S1频点）测量时延（S1时延）和X波段单程测距差分（DOR）信号测量时延（DOR时延）进行了比对分析。初步结果表明,DOR时延的实测资料精度与链路计算理论估值基本相符。而且由于信号的频带较宽,DOR时延弥散度和定位结果弥散度均优于S1,基线时延闭合差也小于S1。这表明此次试验观测是成功的,为后续探月任务储备了关键技术。Two experimental sessions of the X-band monitoring and control system were conducted on 3 and 4 October 2010 during the real-time monitoring stage of the Chang＇E-2 Project.Via positioning reduction of the satellite,the experimental observations of the VLBI delays by tracking data transmission signals at S-band（S1 delay） were compared with those by tracking the differential one-way range（DOR） signals at X-band（DOR delay）.Preliminary results showed that the observation precision of the DOR delay was consistent with the theoretical link budget.In addition,mainly due to the relatively wide frequency band of the DOR signals,the dispersion of the delays and the positioning results of the DOR signal was less than that of the S1 signal,the baseline delay closure error was also less than the S1 signal,which demonstrated the experiments were successful and laid out supporting technique for the follow-on lunar missions of China.

关 键 词：深空探测 甚长基线干涉测量 单程测距差分 定位归算 数据处理 

分 类 号：V11[航空宇航科学与技术—人机与环境工程] P129[天文地球—天体测量]