Comparison of the atomic clock orientational error in on-board equipment of Galileo, GPS and BeiDou satellite systems

Abstract

An assessment of the influence of the orientational frequency shift of an optically pumped quantum standard with a gas cell in the total error of the navigation systems Galileo, GPS and BeiDou satellites ephemeris is presented. A comparison of the calculated and experimental data of the time dependencies of the orientation errors for different working magnetic field values and directions is shown. For a numerical estimate of the orientational error influence on the ephemeris of different satellites, the values of the correlation coefficients between the calculated and the experimental dependencies on time are presented.