全球定位系统2024，Vol.49Issue(2)：98-105,8.DOI:10.12265/j.gnss.2023194
基于SGP4模型的空间站轨道精度分析
Space station orbital accuracy analysis based on the SGP4 model
摘要
Abstract
In the ground antenna observation mission of low-orbit space station,the azimuth and elevation angle of the antenna to the space station are usually planned based on the satellite tool kit(STK)software,and then the antenna automatically tracks the space station.In order to ensure the accuracy and reliability of antenna tracking,it is necessary to calculate the accurate space station orbit and antenna's azimuth and elevation angle regularly and update the planning task.Therefore,scientific analysis and evaluation of the long-term forecast accuracy of space station orbit provided by the two-line orbit root number two line elements(TLE)of LEO satellites is of great significance for ground stations to achieve accurate tracking of satellites.In this paper,taking the Mengtian space lab module of China Space Station(CSS)as an example,based on the TLE data,the simplified general perturbations(SGP4)model provided by STK software is used to calculate the satellite's orbit as well as the space station's azimuth and elevation angle relative to the Xi'an Ground Station,and to analyse the effect of the accuracy under different strategies.The experimental results show that updating the space station's two rows of orbital roots on the second day can obtain better orbital results to ensure the tracking accuracy of the antenna.关键词
梦天实验舱(Mengtian Lab Module)/两行轨道根数(TLE)/SGP4 轨道预报/方位角/俯仰角Key words
MENGTIAN space station/two-row orbit root/SGP4 orbit prediction/azimuth/elevation angle分类
天文与地球科学引用本文复制引用
徐玲玲,赵航,宋静,陈书芃,潘志兵..基于SGP4模型的空间站轨道精度分析[J].全球定位系统,2024,49(2):98-105,8.基金项目
中国科学院技术支撑人才计划项目、国家自然科学基金(12273045) （12273045）
