To improve the performance prediction of low frequencies sonar (Anti Submarine Warfare) we can use geoacoustic information coming from different kind of sensors. However, geoacoustic and scattering properties estimation by inversion of received acoustic signals remains very difficult and strongly dependent on the system of measurement. Indeed the interaction between an acoustic wave and the sediment is heavily dependent on frequency, measurement angle and micro roughness of seafloor. Therefore, fusion of geoacoustic models inverted from different sonar systems with wide diversity of insonification angles and frequencies (single beam echosounder (SBES), multibeam echosounder (MBES), sidescan sonar (SSS) and subbottom profiler(SBP)) allow an extended description of the acoustic properties of the seafloor and the first sediment layers. In this paper, we propose a characterization method based on the Dempster Shafer theory of evidence to fuse geoacoustic models in order to classify the seafloor and estimate geoacoustic parameters.
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