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基于CE-3的无线电测月研究
唐歌实, 曹建峰, 韩松涛, 胡松杰, 任天鹏, 陈略, 孙靖, 王美, 李羿霏, 李黎
北京航天飞行控制中心 航天飞行动力学技术重点实验室
摘要:
CE-3号探测器于2013年12月14日成功着陆于月表虹湾区,在预期1年的生存期内,着陆器能够相 干转发下行X波段信号。基于这些信号,地面测控天线以及VLBI(verylongbaselineinterferometry,甚长基线干 涉测量)天线能够进行距离、速度、载波相位、VLBI时延以及时延率的测量。传统的激光测月技术只能提供距离测 量信息,无线电测月技术能够同时提供更丰富的观测量类型,有可能获取优于激光测月技术的科学成果。为了分 析LRM(lunarradiomeasurement,无线电测月)可能的贡献,MEKAS(MoonEarthkinematicalanalysissoftware)软 件用于支撑无线电测月的数据分析处理,其能够模拟全部观测量类型,具备协方差分析以及CE-3着陆器定位、测 站坐标解算等功能。模拟分析表明无线电测月技术在地月球科学方面具有广阔的应用前景。
关键词:  嫦娥3号;玉兔号月球车;X波段转发器;无线电测月
DOI:10.15982/j.issn.2095-7777.2014.03.013
分类号:V556.6
基金项目:国家自然科学基金(61401014)
Research on Lunar Radio Measurement on Chang’e-3
TANG Geshi, CAO Jianfeng, HAN Songtao, Hu Songjie, REN tianpeng, CHEN lue, SUN Jing, WANG Mei, LI Yifei, LI Li
National Key Laboratory of Science and Technology on Aerospace Flight Dynamic,Beijing Aerospace Control Center
Abstract:
After the successful launch on December 2, 2013, Chang’e-3 performed soft landing on lunar surface on December 14, which is designed to stand in place for more than 1 year, and it can transmit X-band signals when the transponder is switched on. With the signals, ranging, Doppler, carrier phase, VLBI delay and delay rate can be acquired from ground TT&C antennas and VLBI antennas. These techniques can be called Lunar Radio Measurement (LRM) collectively. By LRM technique, more rich observations can be acquired nearly at the same time, so it could be more effective in contributing to space geodesy than LLR(lunar Laser Ranging)which only provides ranging observation. To analyze the LRM technique, MEKAS (Moon Earth Kinematical Analysis Software) is developed, which can simulate all kinds of observations mentioned above, carry out covariance analysis and determine the parameters including CE-3 position on the lunar surface, ground site coordinates UT1, EOP and love number. Simulation results show that LRM technique has wide prospects in earth and lunar science.
Key words:  Chang’e-3;Yutu Rover;X-band transponder;lunar radio measurement