DEVICE FOR RADIOENGINEERING MONITORING OF RADIO SOURCES Russian patent published in 2008 - IPC G01S3/28 

FIELD: determination of the radio signal bearing and frequency in radio-engineering monitoring systems.

SUBSTANCE: the device has series-connected the first reception antenna, the first radio-frequency amplifier, the first power divider, frequency meter, and a unit for processing the results of measurement for determining the value of the radio source bearing and normalizing the control signal for the controlled phase shifter, series-connected the second reception antenna, the second radio-frequency amplifier and the second power divider, as well as the third reception antenna and the third radio - frequency amplifier, also series-connected, two multipliers, two low - pass filters, controlled phase shifter and a phase-difference meter, the first and second inputs of the first multiplier are connected to the second output of the first power divider and the output of the controlled phase shifter, respectively, and output-to the input of the first low-pass filter, the first and second inputs of the second output of the second power divider, and the output - to the input of the second low-pass filter the signal and control inputs of the controlled phase shifter are connected to the third output of the second power divider and the output of the mentioned processing unit respectively, the second and third inputs of this unit are connected to outputs of the first and second low-pass filters, respectively, the first and second inputs of the phase-difference meter are connected to the third output of the first power divider and the output of the third radar frequency amplifier respectively, and the output to the fourth input of the mentioned processing unit, the focal axes of the reception antennas are parallel and coincided with the direction to the center of the direction finding sector.

EFFECT: simplified construction and enhanced accuracy of direction finding.

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