Due to very small dimensions and high manoeuvrability, the drones are extremely difficult to detect. According to radio physics, objects smaller than the radar wavelength do not reflect the signal at all. Therefore, conventional radar systems operating in the centimetre and decimetre waves are powerless against drones as they were engineered for the identification of larger airborne targets like planes and helicopters. A drone is composed of many small parts, and traditional radars do not see them. To detect the drone, it is required to use radar operating in the millimetre wave range, as wavelength is smaller than the drone parts.
Studies have shown that all drones (quadcopters, UAVs, etc.), both civilian and industrial, have a special "radar footprint". This feature allows us to avoid being confused between the drone and any other small flying objects.
Radar DDR-76 operates at 76 GHz or at a wavelength of 4 mm, catching the returning signal from a variety of drone small parts.
DDR-76 Radar consists of two subsystems - a circular or sector surveillance and precision-guided pointing. The radar constantly monitors the air hemisphere (or its sector) with circular antenna. When it detects a drone, the separate subsystem of the radar is activated which is accurately guided onto the drone.
Direction to the drone and its current location are displayed on the screen. Optionally, it could activate additional protection system like GPS/3G-4G/Wi-Fi jammers to disorientate the drone. Another solution would be for local security personnel to go to the location of the drone and use special equipment to neutralize it.
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