Electromagnetic Signal Intelligent Identification Based on Radio Frequency Fingerprints

Algorithm 1

RFF calculation and extraction based on PSD analysis.

Input: Signal, ; signal points, ; FFT points, ; signal bandwidth, ; sampling frequency, ;

Output: PSD RF fingerprint features, ;

1: The received signal is normalized to obtain .

2: The PSD of is obtained according to Equation (5).

3: The subsegment of the intercepted validity signal is used as the PSD RF fingerprint feature

4: return.