THERMAL IMAGING METHOD FOR DETECTING A "MULTICOPTER"-TYPE UNMANNED AERIAL VEHICLE Russian patent published in 2021 - IPC G06T7/62 G06K9/54 G01S3/78 H04N5/341 

FIELD: surveillance.

SUBSTANCE: invention relates to the field of security systems intended for detecting and identifying small-sized unmanned aerial vehicles (UAVs), namely "multicopter"-type UAVs, in order to prevent unauthorised access to the controlled area, and can be used in unmanned aerial vehicle (UAV) countermeasure systems, in particular, for military purposes. The substance of the invention consists in the fact that a set of thermal imaging cameras (thermal imagers) installed on the border of the controlled zone, intended for obtaining a thermal image of the controlled airspace, is added to the existing UAV countermeasure systems. The method for detecting a "multicopter"-type UAV is based on the following statements: motors of "multicopters" have a certain heating temperature, the value whereof depends on the power of the electric engine, the modes of operation of the "multicopters", e.g., climb, flight, hovering; the temperature of the motors of "multicopters" is invariant to the ambient temperature and, therefore, in the image obtained from the thermal imager, the thermal point areas of the motors are visible against the atmospheric background of the controlled zone; the structurally mutual position of the motors of "multicopter"-type UAVs, depending on the number of motors, forms regular geometric shapes, such as square, hexagon and octagon, in the projection on the plane of the screen of the thermal imaging camera.

EFFECT: increase in the completeness of the detected "multicopter"-type UAVs operating in the controlled area at night.

1 cl, 7 dwg