Universal coefficients for precise interpolation of GNSS orbits from final IGS SP3 data

Abstract

This paper describes a new framework for very accurate linear interpolation for GLONASS and GPS satellite orbits. Using only 6 consecutive SP3 positions with 15-min time step one may find satellite positions between these points with RMS error 0.4 cm for GPS satellites and 0.2 cm for GLONASS satellites.