Abstract
Most work on MFP has been done with vertical line arrays, and indeed, using the near‐orthogonality of the normal modes over the water column provides better resolution of range and depth than a horizontal array of comparable size. However, when we put an array into an environment where there are multiple sources, some much louder than others, the horizontal aperture’s ability to form nulls in azimuth starts to trump the vertical aperture. We will present simulation results comparing various combinations of horizontal and vertical apertures and evaluate their ability to both resolve source range and depth and to cope with a loud interfering source in an adaptive MFP context, where the loud source hides other sources if conventional Bartlett (i.e., nonadaptive) MFP is used.
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