MFSK Signal Individual Identification Algorithm Based on Bi-spectrum and Wavelet Analyses

2016 KSII Transactions on Internet and Information Systems  
Signal individual reconnaissance and identification is an extremely important research topic in non-cooperative domains such as electronic countermeasures and intelligence reconnaissance. Facing the characteristics of the complexity and changeability of current communication environment, how to realize radiation source signal individual identification under the low SNR conditions is an emphasis of research. A novel emitter individual identification method combined bi-spectrum analysis with
more » ... et feature is presented in this paper. It makes a feature fusion of bi-spectrum slice characteristics and energy variance characteristics of the secondary wavelet transform coefficient to identify MFSK signals under the low SNR (signal-to-noise ratios) environment. Theoretical analyses and computer simulation results show that the proposed algorithm has good recognition performance with the ability to suppress noise and interference, and reaches the recognition rate of more than 90% when the SNR is -6dB. This paper includes a concrete bi-spectrum analysis and a specific wavelet low-frequency analysis of MFSK signals. Based on two feature extraction analyses of MFSK, the paper proposes a original identification algorithm for MFSK under low SNR.
doi:10.3837/tiis.2016.10.010 fatcat:fleqjqzsvfhqji6ig6l4gfp3be