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Електронний архів Житомирського державного технологічного університету

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Title ???????? ???????? ?????????? ???????? ??????????? ????????? ????????
Algorithm for detecting acoustic signals of unmanned aerial vehicles
 
Creator ???????, ?.?.
Buhaiov, M.V.
 
Subject ??????????? ????????? ??????
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unmanned aerial vehicles
acoustic signal
periodogram
threshold processing
statistical indicator of quality
the multiplicity of frequencies
 
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The algorithm for the detection of small unmanned aerial vehicles (UAVs) based on the analysis of the acoustic emission signals is developed. The research shows that the UAV acoustic signal is the sum of harmonics with multiple frequencies. Therefore, as a criterion for the reliable detection of such signals in realization of the received signal at least three components with multiple harmonic frequencies are taken. To separate the spectral components of the signal periodogram was used. The threshold processing in the frequency domain in accordance with the developed algorithm is implemented. It uses statistical quality indicator of the received spectral estimation. According to this algorithm, at high signal to noise ratio (SNR) the threshold value is calculated according to the characteristics of the signal, and at the low - value for the following sampling frequency processing steps. The efficiency of developed modeling of acoustic signals detection was verified by statistical modeling.Aat lower values of SNR probability of detection can be improved by increasing the probability of false alarm to detect or mitigate the criterion requirements.
 
Date 2016-04-04T12:16:18Z
2016-04-04T12:16:18Z
2015
 
Type Article
 
Identifier http://eztuir.ztu.edu.ua/123456789/2500
 
Language uk
 
Relation ?????? ????: ?????: ???????? ?????;3(74)
 
Publisher ????