Comparison of GNSS Solution Errors Using an Atomic Clock or Crystal Oscillator

The errors of navigation determinations based on GNSS signals are compared when using an atomic clock (quantum frequency standard) or a reference crystal oscillator in navigation equipment. Under the conditions of reducing the number of navigation signals to three only for the receiver with an atomic clock, the error in determining the coordinates did not exceed 10m for several tens of minutes when using the extended Kalman filter algorithm without a separate forecast of the receiver's time scale.