1.武汉大学测绘遥感信息工程全国重点实验室,湖北 武汉,430079
2.北京跟踪与通信技术研究所,北京,100094
胡忠禹,硕士,主要研究方向为小天体精密定轨与参数解算。huzy2318@whu.edu.cn
鄢建国,博士,教授。jgyan@whu.edu.cn
收稿:2023-11-20,
纸质出版:2025-05-05
移动端阅览
胡忠禹,王宏,刘路,等.基于光学与雷达数据的小行星精密定轨[J].武汉大学学报(信息科学版),2025,50(5):881-888.
HU Zhongyu,WANG Hong,LIU Lu,et al.Precision Orbit Determination of Asteroid Based on Optical and Radar Data[J].Geomatics and Information Science of Wuhan University,2025,50(5):881-888.
胡忠禹,王宏,刘路,等.基于光学与雷达数据的小行星精密定轨[J].武汉大学学报(信息科学版),2025,50(5):881-888. DOI:10.13203/j.whugis20230036
HU Zhongyu,WANG Hong,LIU Lu,et al.Precision Orbit Determination of Asteroid Based on Optical and Radar Data[J].Geomatics and Information Science of Wuhan University,2025,50(5):881-888. DOI:10.13203/j.whugis20230036
基于Python语言研发了可处理多源实测数据的小行星定轨软件,通过使用小行星Toutatis实测数据(1976—2022年期间观测的光学数据与雷达数据)对其进行精密轨道确定研究,并将定轨结果与Toutatis星历作对比,验证了该软件的可靠性。定轨结果表明,联合使用光学与雷达数据计算得到的小行星精密轨道在3
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2.45533323
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意义下的位置误差为1.9 km,仅使用光学数据计算得到的轨道位置误差为8.818 km,表明雷达数据的引入可以有效降低小行星的轨道确定误差。最终定轨结果达到了千米级的精度,且该精度与小行星星历一致,表明了自主研制的可处理多源实测数据的小行星定轨软件的正确性。
Objectives
2
In order to serve the implementation of China's deep space exploration programs
we develop software for asteroid orbit determination that can handle multiple sources of measured data.
Methods
2
The precision orbit of the asteroid Toutatis is investigated by using its measured data (optical and radar data observed during the period 1976—2022)
and the orbit determination results were compared with the Toutatis ephemeris
which verified the reliability of the software.
Results
2
The orbit determination results show that the position uncertainty of the precision orbit of the asteroid calculated by combining optical and radar data is 1.9 km in the sense of 3
and the orbital position uncertainty calculated by optical data alone is 8.818 km
indicating that the introduction of radar data can effectively reduce the orbital determination error of asteroids.
Conclusions
2
The final orbit determination result reached the engineering level
and the accuracy of the asteroid ephemeris was consistent
which showed the correctness of the self-developed asteroid orbit determination software that can process multi-source measured data.
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