Contribution to Passive Acoustic Ocean Tomography- Part IV: A data Fusion Strategy For Blind Source Separation and Classification S. Vallez, A. Martin, A. Mansour, C. Gervaise, A. Khenchaf ENSIETA, E3I2 EA3876, 2 rue Francois Verny 29806 Brest Cedex 9, France Abstract - In this paper we applied Fusion algorithm in a passive Ocean Acoustic Tomography context. We applied several types of independent component analysis algorithms an a large number of realistic data and we propose to classify their respective outputs according to the principal properties of the opportunity sources. Finally, we apply a fusions model.. the Belief functions theory to outperform the Blind Source Separation/classification approach.