SOURCE TRACKING IN THE HUDSON CANYON EXPERIMENT

In the Hudson Canyon experiment, a broadband source, transmitting simu ltaneously in four frequencies, moved in range at a constant depth and bearing. Using broadband matched-field processing we demonstrate that tile source can be localized and tracked. Incoherent broadband approa ches for matched-field processing, based on tile averaging of ambiguit y surfaces obtained with the narrowband Bartlett and Minimum Variance processors, are compared to a new coherent variant. Localization is ve ry successful when either the incoherent or coherent Bartlett estimato r is used, The Minimum Variance processor performance in determining t he source location is very poor in the incoherent case but improves si gnificantly with the introduction of the coherent scheme.