| Autor: |
Khudov, Hennadii, Berezhnyi, Andrii, Yarosh, Serhii, Oleksenko, Oleksandr, Khomik, Mykola, Yuzova, Iryna, Zvonko, Andrii, Yarovyi, Serhii, Glukhov, Sergey, Sobora, Anatolii |
| Předmět: |
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| Zdroj: |
Eastern-European Journal of Enterprise Technologies; 2023, Vol. 126 Issue 9, p6-13, 8p |
| Abstrakt: |
The object of this study is the process of detecting and determining the coordinates of stealth unmanned aerial vehicles by a network of two small-sized radars. The main hypothesis of the study assumes that the use of two small-sized radars, which are connected in a network, could improve the quality of detection and determination of the coordinates of stealth unmanned aerial vehicles. The improved method for detecting and determining the coordinates of a stealth unmanned aerial vehicle, unlike the known ones, enables the following: – synchronous inspection of the airspace; – reception of the signal reflected from a stealth unmanned aerial vehicle by two small-sized radars; – carrying out coordinated filtering of incoming signals; – compensation of phase shifts and coherent addition of output signals from matched filters; – formation of Doppler channels in each small-sized radar and formation of a complex envelope from the output of the corresponding Doppler channel; – coherent processing (addition) of signals; – compensation of the random initial phase of signals reflected from a stealth unmanned aerial vehicle by detecting the output signal from the coherent adder; – measuring the range to a stealth unmanned aerial vehicle by each small-sized radar; – calculation of the coordinates of a stealth unmanned aerial vehicle. It was established that at low signal/noise values, the gain in terms of the conditional probability of correct detection is from 25 % to 32 %. It was determined that the use of a network of two smallsized radars makes it possible to reduce the mean square error in determining the coordinates of a stealth unmanned aerial vehicle from 28 % to 37 % on average. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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