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Principle of space surveillance used in the multi-beam radar for detection of stealth air targets


I. K. Antonov – Ph.D. (Eng.) E-mail:

The article considers multi-beam radars that enable to increase the detection performance and surveillance speed upon detection of low-speed small size aerial targets of “unmanned aerial vehicle” (UAV) type while the radar is an integral part of a critical site security system. These radars form a fan of narrow reception beams of the directional pattern in the azimuthal plane and scans with this fan in the elevation plane. This mode provides a change of the image frame in the surveillance coverage with an interval up to 2 sec at the zero to almost 90 degrees size of the zone of one radar constant surveillance in the elevation (vertical) plane. Detection range of targets with an effective reflection surface of 0,005 to 0,5 m2 reaches 15 km. Detection, recognition and trajectory tracking of weak signals reflected from UAVs on the ground scatter require long coherent gathering of these signals. Multi-beam radars provide desirable time of gathering Tc that falls in the range of 0,1 to 0,5 sec, while high rate of surveillance is maintained.


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May 29, 2020

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