| CPC G08G 5/723 (2025.01) [G01S 7/412 (2013.01); G01S 13/91 (2013.01)] | 18 Claims |
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1. A drone classification device, comprising:
a radio signal receiver configured to receive a radio signal; and
a radio signal analyzer configured to:
determine physical characteristics of the received radio signal;
compare the determined physical characteristics of the received radio signal with a plurality of reference characteristics, each reference characteristic describing a drone class of a plurality of drone classes; and
classify a drone into a drone class of a plurality of drone classes depending on a result of the comparison;
wherein the determining physical characteristics comprises at least one of a group of processes performed on the received radio signal, the group comprising:
creating a spectral correlation function;
creating a periodogram;
autocorrelating the received radio signal;
creating a spectrogram;
applying a wavelet transform;
applying a time smoothing algorithm;
creating a spectral kurtosis; and
creating a power cepstrum.
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