MODELING OF MSK MODULATION SIGNAL FOR DETERMINING DOPPLER FREQUENCY SHIFT ALGORITHM VERIFICATION
In this paper Doppler frequency shift of signal with MSK modulation determining method is considered. As such a method the phase method is proposed. The basic equations of the proposed method for computing the Doppler shift are considered. The estimate of S-band signal Doppler frequency shift is given in this paper. The Doppler shift is calculated assuming a signal from a spacecraft. The spacecraft is located in a high elliptical orbit. The mathematical recording of the modulated signal is analyzed, as well as the mathematical model of the received signal. The Doppler frequency shift is calculated from the simulated signal to determine the error of the proposed method.