大地测量与地球动力学2026，Vol.46Issue(5)：579-586,8.DOI:10.14075/j.jgg.2025.06.223
顾及GLONASS频间码偏差的非差精密时间传递性能评估
Performance Assessment of Undifferenced Precise Time Transfer Considering GLONASS Inter-Frequency Code Biases
摘要
Abstract
To investigate the impact of receiver IFCB on GLONASS undifferenced precise time trans-fer,different IFCB modeling schemes were proposed and their PPP time transfer performance was evaluated,namely the IFCB0 scheme ignoring IFCB,the IFCB1 scheme modeling IFCB as a linear function of frequency numbers,and the IFCB2 scheme modeling IFCB as a quadratic polynomial.The results indicate that IFCB modeling is of great significance for improving the accuracy of PPP time transfer.Compared to the IFCB0 scheme,the IFCB modeling approach demonstrates the most notable improvement in long-term frequency stability for time transfer.The IFCB modeling significantly en-hances time transfer stability for hybrid and heterogeneous receiver/antenna types,while its improve-ment for homogeneous equipment is limited.Additionally,compatibility tests with different satellite precision products show that the IFCB2 scheme aligns best with the precision products from the Euro-pean Orbit Determination Centre,whereas the IFCB1 scheme is more compatible with the precision products provided by Wuhan University.关键词
GLONASS/频间码偏差/PPP/时间传递/频率稳定度Key words
GLONASS/inter-frequency code bias/PPP/time transfer/frequency stability分类
天文与地球科学引用本文复制引用
徐炜,刘婉晴,宋佳,杨子嘉..顾及GLONASS频间码偏差的非差精密时间传递性能评估[J].大地测量与地球动力学,2026,46(5):579-586,8.基金项目
国家自然科学基金(42304095,42030105) （42304095,42030105）
安徽省高校自然科学研究重点项目(2023AH051634,2024AH051436,2024AH051419) （2023AH051634,2024AH051436,2024AH051419）
滁州学院科研启动基金(2023qd07,2023qd08,2024qd02). （2023qd07,2023qd08,2024qd02）
