METHOD FOR DETERMINING DIRECTIONS AND DISTANCE TO SIGNALS SOURCE Russian patent published in 2017 - IPC G01S3/808 

FIELD: measuring equipment.

SUBSTANCE: check in the electromagnetic radiation (EMR) and infrasound arrival time, and the signals time difference. Before the infrasound arrival on the two antennas signals, directed to the cardinal points, find the azimuth, the distance to the source - according to the reflection height from the ionosphere, the signal delay time, according to the three orthogonal antennas - the angle. Fix the azimuth and this angle. Find the signals times from the earth and the ionosphere. In the following signals compare its azimuth with the fixed one, and compare the angles at close values. Then find: the distance to the source, the coordinates, the angle between the vector to the source and the straight line between the sensors. According to the infrasound speed, find the time of its arrival and the error, according to the angles, the distance between the points and time - the infrasound speed, the range - according to the differences of signal times and infrasound speed, the coordinates - according to the azimuth and range.

EFFECT: reduction of its usage error at the single-point observation station and increase of the noise-proof feature in the presence of the interfering signals, coming during the infrasound transmission the distance from the signal source up to the observation point.

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