METHOD OF DETERMINING PARAMETERS OF FREQUENCY-CODED SIGNALS IN AN AUTOCORRELATION RECEIVER Russian patent published in 2020 - IPC G01S5/02 G01S7/41 G01S13/26 

FIELD: radio engineering and communication.

SUBSTANCE: invention relates to radio engineering, particularly to methods and equipment for radio monitoring of radio-frequency sources. Said technical result is achieved by the fact that the received signal is filtered, delayed for a given time, the signal with its delayed copy is multiplied, the difference frequency of the signal is evaluated, the signal component at the difference frequency and the low-frequency component of the signal are picked up and obtained by the AFS. Obtained signal spectra are compared with given threshold values and the results of comparison are used to decide on the type of the received radar signal. If a decision is made to receive frequency-coded signals (FCS), then the main lobe of the AFS of the low-frequency component of the signal is selected, from which the duration of one discrete signal code is determined. Received signal is delayed for a time equal to the duration of one discrete code, the received signal with a delayed copy is multiplied and an AFS of the signal obtained after multiplication is obtained, from which the number of discrete samples, pulse duration and width of the signal spectrum are determined.

EFFECT: technical result is the possibility of determining the presence of FCS and their parameters in an autocorrelation receiver (ACR).

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