Articles | Volume 41, issue 2
Regular paper
14 Nov 2023
Regular paper |  | 14 Nov 2023

Estimation and evaluation of hourly Meteorological Operational (MetOp) satellites' GPS receiver differential code biases (DCBs) with two different methods

Linlin Li and Shuanggen Jin

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Cited articles

Abid, M. A., Mousa, A., Rabah, M., El mewafi, M., and Awad, A.: Temporal and spatial variation of differential code biases: A case study of regional network in Egypt, Alexandria Engineering Journal, 55, 1507–1514,, 2016. 
Arikan, F., Nayir, H., Sezen, U., and Arikan, O.: Estimation of Single Station Interfrequency Receiver Bias Using GPS-TEC, Radio Sci., 43, 762–770,, 2008. 
Choi, B., Sohn D., and Lee, S. J.: Correlation between Ionospheric TEC and the DCB Stability of GNSS Receivers from 2014 to 2016, Remote Sens., 11, 2657,, 2019. 
Choi, B. K. and Lee, S. J.: The influence of grounding on GPS receiver differential code biases, Adv. Space Res., 62, 457–463,, 2018. 
Conte, J. F., Azpilicueta, F., and Brunini, C.: Accuracy assessment of the GPS-TEC calibration constants by means of a simulation technique, J. Geodesy, 85, 707–714., 2011. 
Short summary
We used the spherical harmonic function (SHF) and the local spherical symmetry (LSS) assumption methods to calculate the hourly and daily LEO satellite GPS differential code bias (DCB). The SHF method is more stable and precise than the LSS assumption. The daily DCB estimation is more accurate and stable than the hourly DCB due to more observation data. Hourly DCBs have large changes in one day, mainly be attributed to random errors because these error time series have a normal distribution.