METHOD OF LOCATING GROUND-BASED RADIATION SOURCE USING PHASE DIRECTION-FINDER ON COPTER Russian patent published in 2025 - IPC G01S3/02 G01S5/02 

FIELD: physics.

SUBSTANCE: invention relates to electronic surveillance and can be used to locate a ground-based radio-frequency source. Said result is achieved by the fact that in the method of determining the location of a ground-based radiation source with a phase direction finder on a copter, based on receiving a signal from the radiation source with two omnidirectional antennae, signal of the radiation source is received by antennae placed to the left and to the right of the copter longitudinal axis, after detecting the signal, measuring the wavelength of the received signals and determining the true or false azimuth of the radiation source, the copter is switched to horizontal flight along a circle with the maximum possible roll, at that, measuring the signal level at the multiplier output, the roll angle and the copter flight altitude, if during the copter flight the signal at the multiplier output decreases to the global minimum, then a decision is made that at the initial moment the flight was carried out in the direction of the true azimuth of the radiation source, and if to the local minimum, then in the direction of the mirror, recalculating the measured signal values at the output of the multiplier into angular values and, by the maximum values, taking into account the roll angle, determining the elevation angle of the radiation source, according to the copter horizontal flight measured altitude, as well as the found values of the true azimuth and the elevation angle of the radiation source, its location relative to the copter is determined.

EFFECT: enabling selection of the true direction to a radiation source in the azimuthal plane from the false direction and determination of its position by performing a circular flight by the copter in the azimuthal plane with the maximum possible roll.

1 cl, 3 dwg