A device for correcting frequency shift due to the Doppler effect in a transmission system

摘要

The present invention relates to a device for correction of frequency offset due to Doppler effect in a transmission system. The device for correction of a frequency offset due to the Doppler effect applies in a transmission system in which a signal is transmitted in a transmitting lobe between a transmitter (S) and a receiver (R) in relative movement. The frequency offset ( DELTA f) which is the difference between the frequencies of the transmitted signal measured at the receiver (fr) and at the transmitter (fe) is presented as the sum of a central frequency (fc) characteristic of the transmitting lobe and of a position frequency (fp) which is a function of the position of the receiver (R) in the transmitting lobe. The device comprises means for tuning the receiver (R) which exhibits a tuning frequency (fa) in such a way that this tuning frequency (fa) is equal to the sum of the transmitted frequency (fe) and the central frequency (fc).