A method for extracting and identifying features of radio frequency fingerprints based on bimaxima
A feature extraction and radio frequency fingerprinting technology, applied in the field of communication equipment access authentication, can solve the problems of reducing data storage, large dimension, etc., and achieve the effect of reducing feature dimension, reducing computational complexity, and improving class separable performance.
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[0028] The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.
[0029] like figure 1 As shown in the figure, a method for extracting and identifying features of radio frequency fingerprints based on bimaxima includes the following steps:
[0030] S1. The receiving end receives signals from multiple radio frequency transmitters respectively, and collects samples to obtain sample set D:
[0031]
[0032] Among them, S ij Indicates the j-th sample collected from the i-th RF transceiver signal, i=1, 2, 3,...,N, j=1, 2, 3,...,M; N is the RF transceiver The total number of transceivers, M is the number of signal samples collected for each RF transceiver;
[0033] S2. Select sample data S from sample set D ij =[d 1 ,d 2 ,...,d k ], extract the maximum value d in the sample data l , so that it satisfies d l >d l-1 ...
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