Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Patent
1993-11-01
1995-11-28
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
455 121, 455 676, 342 99, 342358, 3701041, H04B 110, H04B 7185, H04J 306
Patent
active
054716489
ABSTRACT:
The present invention relates to a device for correcting a frequency shift due to the Doppler effect in a transmission system. The device for correcting a frequency shift due to the Doppler effect is applicable to a transmission system in which a signal is transmitted in a transmission lobe between a transmitter and a receiver that are in relative motion. The frequency shift which is the difference between the frequency of the transmitted signal as measured at the receiver and as measured at the transmitter is presented as the sum of a center frequency characteristic of the transmission lobe plus a position frequency which is a function of the position of the receiver in the transmission lobe. The device includes means for tuning the receiver which has a tuning frequency such that said tuning frequency is equal to the sum of the transmitted frequency plus the center frequency.
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Eisenzopf Reinhard J.
Societe Anonyme Dite Alcatel Radiotelephone
Wisler Mark D.
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