CAJ | 학술논문

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-3호탐측기우2013년12월14일성공착륙우월표홍만구,재예기1년적생존기내,착륙기능구상간전발하행 X 파단신호。기우저사신호,지면측공천선이급 VLBI(very long baseline interferometry,심장기선간섭측량)천선능구진행거리、속도、재파상위、VLBI 시연이급시연솔적측량。전통적격광측월기술지능제공거리측량신식,무선전측월기술능구동시제공경봉부적관측량류형,유가능획취우우격광측월기술적과학성과。위료분석 LRM(lunar radio measurement,무선전측월)가능적공헌,MEKAS(Moon Earth kinematical analysis software)연건용우지탱무선전측월적수거분석처리,기능구모의전부관측량류형,구비협방차분석이급 CE-3착륙기정위、측참좌표해산등공능。모의분석표명무선전측월기술재지월구과학방면구유엄활적응용전경。
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 signal when the transponder is switched on.With their 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.