Determining the number of small-sized radars in a network with coherent signal processing for the detection of stealth aerial vehicles
DOI:
https://doi.org/10.15587/1729-4061.2024.306520Keywords:
small-sized radar, aerial object detection, number of network elements, conditional probability of correct detectionAbstract
The object of this study is the process of determining the number of small-sized radars in the network when detecting stealth unmanned aerial vehicles. The main hypothesis of the study assumed that determining the optimal number of small-sized radars in the network will make it possible not to waste unnecessary resources of radars to detect stealth unmanned aerial vehicles.
The main stages of detection of a stealth unmanned aerial vehicle by a network of small-sized radars are:
– reception of the signal reflected from a stealth unmanned aerial vehicle by all small-sized radars of the network;
– coordinated filtering of incoming signals in each small-sized radar;
– compensation of phase shifts in each matched filter;
– coherent addition of output signals from each matched filter at the output of the receivers of each of the N small-sized radars performing reception;
– formation of a complex bypass at the output of the corresponding Doppler channel in each small-sized radar of the network;
– coherent processing of signals from all elements of the network of small-sized radars;
– detection of the output signal from the adder of coherent signals. At the same time, compensation for the random initial phase of signals reflected from a stealth unmanned aerial vehicle is also performed.
It has been established that the increase in the elements of the network of small-sized radars increases the value of the conditional probability of correct detection. Such an increase is more significant when the number of elements in the network of small-sized radars is increased to two or three. The gain in the signal/noise ratio when adding elements to the network of small-sized radars was evaluated. It was established that the optimal number of small-sized radars in a network with coherent signal processing when detecting stealth unmanned aerial vehicles is 2‒3 radars
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Copyright (c) 2024 Hennadii Khudov, Oleksandr Makoveichuk, Ihor Butko, Mykhajlo Murzin, Andrii Zvonko, Anatolii Adamenko, Dmytro Bashynskyi, Oleh Salnyk, Andrii Nyshchuk, Vladyslav Khudov
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