中国空间科学技术（中英文）2025，Vol.45Issue(6)：62-70,9.DOI:10.16708/j.cnki.1000-758X.2025.0089
时空参考系对地月观测建模与应用的影响
Comprehensive impact of space-time reference frames on cis-lunar observation modeling and practical applications
摘要
Abstract
The study investigates the high-precision application requirements of spacetime reference systems in lunar-Earth space exploration,aiming to evaluate the impact of different spacetime reference systems on the determination of target orbits in lunar-Earth space.Typical orbits within lunar-Earth space are selected as the subjects for quantitative assessment.A comparison strategy for the influence of spacetime reference systems is established.Differences in observational modeling under the frameworks of the Geocentric Celestial Reference System(GCRS)and Barycentric Celestial Reference System(BCRS)are analyzed.Simulation techniques are employed to further explore the specific impacts of these two spacetime reference systems on the determination of target orbits in lunar-Earth space.The results indicate that,under different spacetime reference systems,the modeling differences for ground-based ranging and time delay are less than 4cm,and velocity measurement differences are less than 0.5mm/s.The impact of orbit determination biases remaines within 1 m.Modeling differences for inter-satellite bidirectional links are on the centimeter scale,whereas modeling differences for unidirectional links can reach 10m.For lunar-Earth space target orbit determination tasks requiring accuracy at the decimeter level,the application of GCRS is sufficient to meet demands.However,for achieving higher precision in orbit determination,particularly in constructing and maintaining high-precision spacetime benchmarks in lunar-Earth space,as well as utilizing inter-satellite unidirectional link data,the adoption of the BCRS is more appropriate.关键词
地月空间/时空参考系/观测建模/轨道计算/精度分析Key words
cis-lunar space/spacetime reference system/observational modeling/orbit calculation/precision analysis分类
天文学引用本文复制引用
曹建峰,黄勇,满海钧,刘山洪,张宇..时空参考系对地月观测建模与应用的影响[J].中国空间科学技术（中英文）,2025,45(6):62-70,9.基金项目
民用航天预研项目地月通信导航系统技术(D040102) （D040102）
