Time-Frequency MUSIC Encephalon Source Localization Algorithm in Impulsive Stable Distribution Noise
Haibin Wang, Peng Li, Huicheng Xie, Junbo Long, Daifeng Zha · Advances in computer science research · 2015
Magnetoencephalograph spatial Time-Frequency Multiple Signal Classification (MEG-TF-MUSIC)can work well in essential and sensor noises environment, but a pulse noise exist in MEG array processing data, they can be described by α stable distribution.The performance of MEG-TF-MUSIC degenerate in α stable distribution environment, Hence, we define the fractional lower order moments spatial time-frequency distribution matrix (FLOM-STFDM) concept based on fractional lower order covariance, and MEG spatial Time-Frequency Fractional Lower order Multiple Signal Classification(FLO-MEG-TF-MUSIC) method in which STFDM is replaced by FLOM-STFDM is proposed, procedures of algorithm is introduced in this paper, it can effectively reduce he source location estimation mean square error (MSE) .Simulations show that the technique demonstrate the advantages than MEG-TF-MUSIC in α stable distribution environment, is robust.