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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(very long baseline interferometry,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(lunar radio measurement,无线电测月)可能的贡献,MEKAS(Moon Earth kinematical analysis software)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。
CE-3 successfully landed on Hong Kong Moon Bay on December 14, 2013. During the one-year life expectancy, the lander can co-transmit downlink X-band signals. Based on these signals, ground-based antennas and VLBI (Very Long Baseline Interferometry) antennas enable measurements of distance, velocity, carrier phase, VLBI delay, and delay rate. Traditional laser moon measurement technology can only provide distance measurement information, radio moon measurement technology can provide richer types of observations at the same time, it is possible to obtain scientific results superior to laser moon measurement technology. In order to analyze the possible contribution of lunar radio measurement (LRM), MEKAS (Moon Earth kinematical analysis software) software is used to support the data analysis and processing of the radio moon-finder, which can simulate all types of observations with covariance analysis and CE -3 lander positioning, station coordinate solution and other functions. Simulation results show that radio moon-finder technique has a broad application prospect in Earth-moon science.