全球定位系统2025，Vol.50Issue(1)：1-8,8.DOI:10.12265/j.gnss.2024215
电离层异常下GNSS周跳探测及定位性能评估
Evaluation of GNSS cycle slip detection and location under ionospheric anomaly
摘要
Abstract
Ionospheric anomaly generate negatively affect for the reliability and positioning accuracy of GNSS.Evaluating and reduction the impact of ionospheric anomaly on the observation quality of GNSS is a prerequisite for ensuring the stability of GNSS position services.In this paper,we select three ionospheric anomaly events in 2023.The performance for cycle slip detection of the MW combination and the differential GF combination is compared using pseudorange and carrier phase from four BDS GEO satellites.Meanwhile,the impact of ionospheric anomaly on the GNSS position performance is evaluated using PPP static displacements.The results show that:1)there may be undetected cycle slip for the MW combination and the differential GF combination relying on fixed thresholds,may have a weekly jump omission.2)the positional accuracies in three components are significantly reduced,with a more pronounced effect on the elevation direction.关键词
电离层异常/周跳探测/定位性能评估/北斗卫星导航系统(BDS)/地球同步轨道(GEO)卫星/精密单点定位(PPP)Key words
ionospheric anomaly/cycle slip detection/location evaluation/BDS/GEO satellite/PPP分类
天文与地球科学引用本文复制引用
刘朝颜,罗鑫磊,李秉清,栗广才,宋传峰..电离层异常下GNSS周跳探测及定位性能评估[J].全球定位系统,2025,50(1):1-8,8.基金项目
国家重点研发计划(2021YFC3000500) （2021YFC3000500）
国家自然科学基金(42204021) （42204021）
辽宁省地理空间信息技术重点实验室(辽宁工程技术大学)开放研究基金(LNTUGIT2023-1-2) （辽宁工程技术大学）
