Common-frequency radio network having a corrected transmitter frequency

摘要

A common-frequency radio network having two or more fixed-position transceiver stations, whose transmitters transmit using common-frequency radio and have high-precision, frequency-stabilising devices, the transmission frequency of at least one of the transmitters being correctable as a function of a control criterion, and having transceiver stations which move quickly. The transmitters (S) of the mobile transceiver stations (TF) likewise have high-precision, frequency-stabilising devices (OF, FN). The receivers (E) of the fixed-position transceiver stations (SE-O) are connected to the already existing frequency-stabilising devices (FN) and contain a frequency-discriminator circuit (FD), with averaging, by means of which the Doppler shift (which is caused by the movement of a mobile transceiver station (TF)) of the reception frequency is measured. The measured Doppler shift is used to derive a control criterion (SK) for correcting the transmission frequency of the fixed-position transceiver station (SE-O) (Figure 2). <IMAGE>