同济大学学报（自然科学版）2025，Vol.53Issue(3)：494-502,9.DOI:10.11908/j.issn.0253-374x.23291
顾及频间钟偏差改正的精密单点定位模糊度固定
Precise Point Positioning Ambiguity Resolution with Inter-Frequency Clock Bias Correction
摘要
Abstract
This paper addresses the issue that inter-frequency clock bias(IFCB)affects the performance of triple-frequency undifferenced and uncombined precise point positioning ambiguity resolution(PPP-AR).It proposes an epoch-differenced(ED)method to estimate IFCB for Global Positioning System(GPS),Galileo Navigation Satellite System(Galileo),and BeiDou Navigation Satellite System(BDS)satellites.It analyzes the time-varying characteristics of phase-specific IFCB(PIFCB)for these three satellite systems and evaluated the impacts of IFCB correction on extra-wide lane(EWL)uncalibrated phase delay(UPD)estimation for GPS Block IIF satellites and the performance of triple-frequency undifferenced and uncombined PPP-AR.The results demonstrate that the peak values of time-varying PIFCB series for GPS,Galileo,and BDS satellites are approximately 10 cm,3 cm,and 5 cm,respectively.IFCB correction significantly improves the stability of EWL UPD estimation for GPS Block IIF satellites and enhances the performance of triple-frequency undifferenced and uncombined PPP-AR.关键词
频间钟偏差/未校准相位延迟/精密单点定位/模糊度固定Key words
inter-frequency clock bias(IFCB)/uncalibrated phase delay(UPD)/precise point positioning/ambiguity resolution分类
天文与地球科学引用本文复制引用
张兵良,方卓,王立诗云..顾及频间钟偏差改正的精密单点定位模糊度固定[J].同济大学学报（自然科学版）,2025,53(3):494-502,9.基金项目
国家自然科学基金面上项目(42271106) （42271106）
