beamforming in shallow water environments

What is it about?

In this study, the performance of the conventional delay-and-sum beamforming technique is investigated when low-frequency signals are propagated in shallow water environments and recorded by a horizontal linear array of hydrophones. Simulations are undertaken to understand how the resolved angle from the conventional beamforming method is related to the bearing angle and the incident angle of each mode.

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Why is it important?

In shallow water environments, the beamforming performance degrades because of the interference between individual mode incident angles. In this study, the accuracy and robustness of the delay-and-sum beamforming method are investigated via a simulation parametric study in an ocean waveguide that is only a few acoustic wavelengths thick.