天文学进展2023，Vol.41Issue(4)：546-557,12.DOI:10.3969/j.issn.1000-8349.2023.04.06
HY2D卫星星载GPS数据精密定轨研究
Research on Precise Orbit Determination Using Onboard GPS Data of HY2D Satellite
摘要
Abstract
The quality and orbit determination accuracy of the primary and backup on-board GNSS receivers were studied by using the HY2D satellite's primary and backup GNSS receiver data from June 1 to 14 and June 19 to 27,2021 based on reduced-dynamic method.The results showed that:(1)The RMS average values of the phase fitting residuals of the main and backup onboard GPS data were 6.9 mm and 8.2 mm,respectively.(2)The radial difference of the main receiver for a 4-hour arc overlap orbit was 0.2 cm,while the three-dimensional position differences was 0.6 cm.The radial difference of the backup receiver was 0.3 cm,while the three-dimensional position difference was 1.7 cm,indicating slightly larger differences from the backup receiver results.(3)The orbit determination accuracies of the primary and backup receivers were verified using precise orbit products provided by CNES,with average radial differences of 0.8 cm and 1.2 cm respectively.(4)The orbit determina-tion accuracies of the primary and backup receivers were also verified using observation data from global SLR core stations with elevation angles greater than 20°,with the RMS range residuals of 1.51 cm and 2.44 cm.It can be seen that the main and backup dual-frequency GNSS receivers carried by the HY2D satellite can meet the satellite's centimeter-level radial orbit determination requirements.关键词
HY2D卫星/GPS/主份接收机/备份接收机/精密定轨Key words
HY2D satellite/GPS/primary receiver/backup receiver/precise orbit deter-mination分类
天文与地球科学引用本文复制引用
陶恩哲,周旭华,徐可馨,曲伟菁,李朵朵,李凯..HY2D卫星星载GPS数据精密定轨研究[J].天文学进展,2023,41(4):546-557,12.基金项目
国家自然科学基金(12273096,12103077) （12273096,12103077）
