辽宁工程技术大学学报（自然科学版）2026，Vol.45Issue(2)：177-184,8.DOI:10.11956/j.issn.1008-0562.20250434
极区BDS多频信号分析与PPP定位性能评估
Assessment of multi-frequency BDS signal quality and PPP positioning performance in polar regions
摘要
Abstract
To evaluate the data quality and positioning performance of the BeiDou Navigation Satellite System(BDS)in polar environments,a systematic analysis was conducted based on 14 consecutive days of observation data from polar stations of the International GNSS Service Multi-GNSS Experiment(IGS MGEX)network.The results show that in polar regions,the number of visible BDS satellites ranges from 7 to 13,and the Position Dilution of Precision(PDOP)of BDS outperforms that of other Global Navigation Satellite Systems(GNSS).The data completeness rates of BDS in the Antarctic and Arctic are approximately 87.79%and 91.29%,respectively.The signal-to-noise ratios(SNR)in the two polar regions show little difference with a mean value of about 45 dB,and the multipath errors range from 24.58 cm to 25.38 cm.In terms of positioning performance,the BDS ionosphere-free combinations of B1C+B2a and B1I+B3I exhibit outstanding performance.Compared with the L1+L2 of the Global Positioning System(GPS),G1+G2 of the Global Navigation Satellite System(GLONASS)and E1+E5a of the Galileo Satellite Navigation System,the 3D positioning accuracy of BDS B1C+B2a is improved by 6.7%,19.6%and 18.5%in the Antarctic,and by 1.2%,18%and 12%in the Arctic,respectively.The 3D positioning accuracy of BDS B1I+B3I is improved by 6.7%,19.6%and 18.5%in the Antarctic,and by 14.8%,29.3%and 24.2%in the Arctic,respectively.The convergence speed of BDS B1C+B2a is reduced by 21.5%,25.1%and 14.5%in the Antarctic,and by 14.9%,32.5%and 28.6%in the Arctic,compared with that of L1+L2,G1+G2 and E1+E5a,respectively.The convergence speed of BDS B1I+B3I is reduced by 26.7%,30.1%and 20.3%in the Antarctic,and by 50.9%,61.1%and 58.9%in the Arctic,compared with that of the above three combinations,respectively.The research conclusions provide a reference for improving the positioning accuracy in the complex polar environments.关键词
北斗卫星导航系统/极地地区/信号质量/精密单点定位/收敛速度Key words
BeiDou Navigation Satellite System(BDS)/polar regions/signal quality/Precise Point Positioning(PPP)/convergence speed分类
天文与地球科学引用本文复制引用
高猛,韩佑珍..极区BDS多频信号分析与PPP定位性能评估[J].辽宁工程技术大学学报（自然科学版）,2026,45(2):177-184,8.基金项目
国家自然科学基金项目(41904037) （41904037）
辽宁省自然基金联合计划资助项目(20240336) （20240336）
辽宁省教育厅基本科研项目(LJ212410147011) （LJ212410147011）
