DEVICE FOR DETERMINING DIRECTION TO SIGNAL SOURCE Russian patent published in 2015 - IPC G01V1/16 

FIELD: measurement equipment.

SUBSTANCE: device for determination of a direction to a signal source, which includes in-series connected first magnetic antenna oriented in a north-south direction, and the first amplifier, in-series connected second magnetic antenna oriented in a west-east direction, and the second amplifier, in-series connected third antenna with a circular directivity pattern and the third amplifier, as well as the first, the second and the third analogue-to-digital converters (ADC), which are connected to a personal computer (PC or a microprocessor), which starts a control cycle of reception and processing of information when the specified value is exceeded by a signal from any of the above three antennas. At appearance of a useful signal, calculation of direction to the signal source is performed; in addition, it includes a common timing system unit (GPS or GLONASS) and a subscriber communication unit, which are connected to PC, in-series connected first commutator, second commutator, the first controlled filter and the fourth ADC, in-series connected third commutator, fourth commutator, the second controlled filter and the fifth ADC, in-series connected first digital-to-analogue converter (DAC) and the first calibrator, in-series connected second DAC and the second calibrator, in-series connected third DAC and the third calibrator, in-series connected fourth DAC and a shaper, as well as the third, the fourth and the fifth controlled filters connected with inputs to the first, the second and the third amplifiers respectively, and with outputs to the first, the second and the third ADC, the first and the second mixers, as well as a goniometer provided with the first and the second mutually perpendicular field windings arranged on the rotor connected to a digital drive and an encoder and connected to the first and the second amplifiers respectively, and with n fixed search windings arranged around the rotor and connected to the first and the third commutators. The first and the second mixers are connected with the first inputs to the third amplifier, with the second inputs to outputs of the first commutator and the third commutator respectively, and they are connected with their outputs to the second inputs of the second and the fourth commutators respectively, the first, the second and the third amplifiers are controlled as to a phase shift and amplification to control inputs connected to PC, control inputs of the controlled filters are connected to the shaper output, outputs of the first, the second and the third calibrators are connected to the first, the second and the third antennas respectively, and the rotor drive, the encoder, inputs of the first, the second, the third and the fourth DAC, outputs of the fourth and the fifth ADC and control inputs of the first, the second, the third and the fourth commutators are connected to PC.

EFFECT: possibility of frequency and spatial selection of signal sources.

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