Terrestrial Transmission of Digital Television Signals (DVB-T) - Digital Video and Audio Broadcasting Technology - page 367

If, for instance, the receiver is moving at a certain speed away from the
transmitter or towards the transmitter (Fig. 20.20.), a negative or positive
frequency shift ∆f will occur due the Doppler effect. This frequency shift
by itself does not present any problems to the DVB-T receiver which will
compensate for it by means of its AFC. It can be calculated from the speed
of movement, the transmitting frequency and the velocity of light.
V
Fig. 20.20. Doppler effect
V
Fig. 20.21. Doppler effect in combination with multipath reception
The following applies:
∆f = v • (f/c) • cos(Φ);
where
v is the speed,
f the transmitting frequency,
c the velocity of light (299792458 m/s) and
Φ the angle of incidence of the echo in relation to the direction
of movement.