Estimation and evaluation of hourly Meteorological Operational (MetOp) satellites' GPS receiver differential code biases (DCBs) with two different methods
Linlin Liand Shuanggen Jin
Linlin Li
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030, China
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100049, China
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.
We used the spherical harmonic function (SHF) and the local spherical symmetry (LSS) assumption...