| 地月空间星地双向单程测量高精度模型 |
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| 引用本文： | 刘通,陈浩,郭鹏斌.地月空间星地双向单程测量高精度模型[J].宇航学报,2023,44(2):282-293. |
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| 作者姓名： | 刘通 陈浩 郭鹏斌 |
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| 作者单位： | 1. 中国科学院太空应用重点实验室，中国科学院空间应用工程与技术中心，北京 100094；
2. 北京跟踪与通信技术研究所，北京 100094 |
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| 基金项目： | 中国科学院空间科学战略性先导科技专项（XDA30040400）, 中科院2021特助项目 地月空间高精度时频比对技术与应用研究（T203071） |
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| 摘 要： | 针对使用星地双向单程测量技术实现给定场景下的地月空间高精度测量问题，建立了地月空间纳秒级星地时差解算模型与米级瞬时距离解算模型，定量分析了模型中各因素的量级，并对模型中收发时延、引力时延、定轨误差和大气延迟等多种因素引入的时差和距离估算误差进行了定量分析。仿真数据的处理结果校验了误差量级理论分析的准确性，时差估算的均方根误差优于7.6ns,瞬时距离估算均方根误差优于2.4 m。建立的模型可以对地月空间星地DOWR测量数据进行高精度处理，实现地月空间高精度时间比对，支持未来中国载人登月等任务及地月空间高精度导航技术。
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| 关 键 词： | 双向单程测量 绕月航天器 时间比对 相对论效应 误差分析 |
| 收稿时间： | 2022-09-20 |
A High precision Model of Dual One way Ranging in the Cis lunar Space |
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| LIU Tong,CHEN Hao,GUO Pengbin.A High precision Model of Dual One way Ranging in the Cis lunar Space[J].Journal of Astronautics,2023,44(2):282-293. |
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| Authors: | LIU Tong CHEN Hao GUO Pengbin |
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| Affiliation: | 1. Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094, China;
2. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China |
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| Abstract: | Aiming at the problem of using the space Earth dual one way ranging (DOWR) technology to realize the high precision measurement under a given scenario in the cis lunar space, the models for calculating the time difference between space and earth in nanoseconds and for calculating the instantaneous distance in meters are established. The magnitude of each factor in the model is quantitatively analyzed, and the time difference and distance estimation errors introduced by many factors in the model, such as transceiver delay, gravitational delay, orbit determination error and atmospheric delay are quantitatively analyzed. The simulation data processing results verify the accuracy of the theoretical analysis of the magnitude of error. The root mean squared errors of time difference estimation and instantaneous distance estimation are better than 7.6 ns and 2.4 m, respectively. The established models can perform high accuracy processing of lunar orbiter to ground DOWR measurements, and support high accuracy time transfer experiments for future China’s manned lunar exploration project and other missions and high accuracy navigation technology in the Cis lunar space. |
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| Keywords: | Dual one way ranging Lunar orbiter Time transfer Relativistic effects Error analysis |
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