finder a difference of time of arrival, single-channel, adapted to the processing of signals modules in the amplitude of type a1 a3j or

摘要

The finder at the outputs of the antennas a and b forming its base, connected to entrees of a hybrid coupler a quadrature 20 by means of a controllable delay lines 10, 11. The outputs of the coupler are alternately connected at the input of the reception channel 40 has a rate which, after which a signal has been detected, is a function of the characteristics of this signal detected. When the signal received is a signal of type a module for a speech signal, the rate is a function of the period of melody measured on the signal so that the control circuit 50 generated an error signal as a function of the difference between the energies measured in the gaps equal has a period of melody of the speech signal. / p & & p & the invention applies, in particular, at the location of stations issuers radio transmitting speech signals by a single band lateral without carrier.