Electromagnetic Signal Intelligent Identification Based on Radio Frequency Fingerprints

Algorithm 2

RFF calculation and extraction based on bispectrum analysis.

Input: Signal, ; signal points, ; FFT points, ;

Output: Bispectrum RF fingerprint features, ;

1: The received signal is normalized to obtain .

2: The bispectrum of is obtained according to Equation (7).

3: Calculate the SIB of bispectrum estimation is used as the bispectrum RF fingerprint feature

4: return.