Abstract:In order to analyze the effect of day-boundary discontinuities on GNSS carrier phase frequency transfer, PPP station clock offsets are estimated based on 10 days of GPS and BDS observations from co-location sites of multi-GNSS experiment(MGEX) and BIPM. On the basis of analyzing the statistical characteristics of day-boundary discontinuities of clock offset estimation results, we study the influence of day-boundary discontinuities on the estimation of relative frequency deviation between two clocks from the aspects of theoretical analysis and experimental verification. The results show that the day-boundary discontinuities are in accordance with Gaussian distribution, causing the jumps of relative frequency deviation at the boundary epochs of two clocks, making it difficult to accurately estimate the relative frequency deviation in the total period, seriously affect the clock frequency comparison results.
ZHANG Xiangbo,GUO Ji,HU Yonghui et al. Influence of Day-Boundary Discontinuities on GNSS Carrier Phase Frequency Transfer[J]. jgg, 2022, 42(4): 371-377.