| 低轨卫星导航增强系统精密星历设计方法研究 |
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| 引用本文： | 郭学立,王磊.低轨卫星导航增强系统精密星历设计方法研究[J].大地测量与地球动力学,2021,41(8):800-805. |
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| 作者姓名： | 郭学立 王磊 |
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| 作者单位： | 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079;武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079;地球空间信息技术协同创新中心,武汉市珞喻路129号,430079 |
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| 摘 要： | 在研究GRACE、SWARM等10余颗低轨卫星轨道特性的基础上，对低轨卫星列表型精密星历的采样间隔和内插方法进行分析，并根据用户需求，设计效率优先和精度优先2种精密星历方案。结果显示，低轨卫星轨道高度对采样间隔和内插方法有显著影响，针对3 cm和10 cm轨道精度要求，通过合理设计轨道可将星历文件占用存储空间压缩99%以上。
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| 关 键 词： | 低轨卫星 导航增强 精密星历 星历设计 星历内插 |
Research on Precise Ephemeris Design Method for the LEO Satellites Navigation Augmentation System |
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| GUO Xueli,WANG Lei.Research on Precise Ephemeris Design Method for the LEO Satellites Navigation Augmentation System[J].Journal of Geodesy and Geodynamics,2021,41(8):800-805. |
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| Authors: | GUO Xueli WANG Lei |
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| Abstract: | Based on the analysis of the orbit characteristics of more than ten low-orbit satellites, such as GRACE and SWARM, we analyze the sampling interval and interpolation methods of the precise ephemeris for the low-orbit satellites. We design two precise ephemeris schemes: efficiency first and precision first, according to the user’s requirement. The experimental results show that the orbit height of low-orbit satellites has a significant influence on the sampling interval and interpolation methods. In view of the accuracy requirements of 3 cm and 10 cm orbits, the storage space occupied by ephemeris files can be compressed by more than 99% through reasonable orbit design. |
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| Keywords: | LEO satellites navigation augmentation precise ephemeris ephemeris design ephemeris interpolation |
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