Doppler correction of transmission frequencies

Details Doppler correction of transmission frequencies Doppler correction of transmission frequencies

1974-11-18

1976-02-24

Libman, George H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 4, 325 11, 325 17, 325421, 343179, H04B 700

Patent

active

039406954

ABSTRACT:
Transmissions from a moving, vehicle-mounted transmitter to a remote station are pre-compensated at the transmitter for doppler shift by measuring the doppler shift of signals from the remote station and compensating by the use of a digital multiplier the frequency of transmissions to the remote station in the opposite sense and in an amount equal to the ratio of the nominal transmission to reception frequencies times the measured doppler shift. Application to full and half duplex radios and provisions for frequency shift keying systems are disclosed.

REFERENCES:
patent: 3223997 (1965-12-01), Clark et al.

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