Patent RU-2620919-C1 (RU)
Title: Device for determining peleng and distance to source of signals
Inventor: BARYSHNIKOV ANATOLIJ KONSTANTINOVICH
IPC: G01V11/00
Filed: 2016-05-20
Granted: 2017-05-30
Abstract: FIELD: measuring equipment. 
     SUBSTANCE: device for determining the direction and range to the source of signals, comprising a first antenna, a first and a second microbarometer, and five analog-to-digital converters (ADCs) connected to a personal computer (PC). The apparatus further comprises a unit of a single time system and a communication unit with subscribers connected to a PC, a first amplifier, a first filter, a second amplifier, a first threshold block and an OR circuit, a second antenna, a third amplifier, a second filter, a fourth amplifier and a second A threshold block, a series-connected third antenna, a fifth amplifier, a third filter, a sixth amplifier and a third threshold block, a series-connected seventh amplifier, a fourth filter, A fifth filter, a fourth threshold block, and a first AND circuit, connected in series first digital to analog converter (DAC) and a first calibrator, a second DAC and a second calibrator connected in series, a third DAC and a third calibrator connected in series, a fourth DAC and a fourth calibrator connected in series, a fifth DAC and a first driver serially connected to the sixth DAC and a second A driver, a first timer connected in series, a second AND circuit and a first counter, a ninth amplifier connected in series, a sixth A fifth filter, a tenth amplifier, a seventh filter, a fifth threshold block, and a third AND circuit, connected in series by a seventh DAC and a fifth calibrator, connected in series by an eighth DAC and a third driver, a second timer, a fourth AND circuit, and a second clock to the second inputs of the second and fourth AND circuits, the third and fourth timers. The first, second and third antennas are made of magnetic and arranged mutually perpendicular to each other, the first, second and third drivers are made in the form of a smoothing link with a power amplifier, the first, second, third, fourth and fifth threshold blocks are controlled with a threshold control, the first, second, third, fourth, fifth, sixth and seventh filters are configured with bandwidth control, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and tenth amplifiers are phase-controlled, and the first, second, third, and fourth timers are controlled by the duration of the output signal. The first circuit AND is connected by the second input to the first timer, the third input is connected to the third timer, and the output is connected to the stop input of the first counter, and the third circuit AND is connected by the second input to the second timer, the third input is connected to the fourth timer, and the output is connected to the stop input of second counter. The circuit OR is connected by the second and third inputs to the second and third threshold units respectively, and the output is connected to the PC and to the first and second timers, the first antenna is connected to the first amplifier, the first microbarometer is connected to the seventh amplifier, and the input is acoustically coupled to the fourth calibrator, the second microbarometer is connected to the ninth amplifier, and the input is acoustically connected to the fifth calibrator, the first shaper is connected to the control inputs of the first, second and third filters, the third driver is connected to the control inputs of the sixth and seventh filters, the inputs of the first, second, third, fourth and fifth ADCs are connected respectively to the first, second, third, fourth and sixth filters, the outputs of the first, second and third calibrators are connected respectively to the first, second and third antennas, and the inputs of all the DACs, the inputs of all amplifiers, the control inputs of all threshold blocks, the outputs of the first and second counters, the outputs and control inputs of the first and second timers, as well as the start inputs and control inputs of the third and fourth timers are connected to the PC. 
     EFFECT: reducing inaccuracies when used at a single-point surveillance station or on a vehicle and increase the noise immunity of the device in the presence of interfering signals coming from other azimuths. 
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