METHOD OF DETERMINING LOCATION OF POINT GAMMA RADIATION SOURCE ON THE GROUND Russian patent published in 2017 - IPC G01T1/169 

FIELD: physics.

SUBSTANCE: method for automatically determining the location of a point source of gamma radiation in the terrain comprises the steps of comparing the counting rates of the side detectors and setting the direction to the gamma source using a detection unit located on the board of the helicopter-type unmanned aerial vehicle. Further, the same readings of the counting rates of the side detectors are compared with the count rate of the front detector. When all three detectors coincide, vertical descent is performed. With increasing counting rates from three detectors inversely proportional to the square of the measurement height, it is concluded that the source of gamma radiation is below the aircraft, with a smaller dependence of counting rates from the three detectors on the altitude, it is concluded that there are several sources and fly along an expanding spiral before the difference in velocities of counters of the detectors, after which they are re-switched to automatic search mode. If the UAV is located above the source of gamma radiation, its coordinates are transmitted to the control point, where the projection of this point of space is marked on the map in real time.

EFFECT: operative search of a point source of gamma radiation in automatic mode using UAV of helicopter type on a large territory.

3 dwg,1 tbl