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The exploration of buried deposits under the sea sediment requires high directivity and low attenuation beams. The parametric sub-bottom profiler (PSBP) meets these requirements; moreover, it is comparatively small and can be easily mounted on autonomous underwater vehicles (AUVs). For this reason, we are developing a new PSBP system for AUVs. In this study, the performance of the PSBP system is estimated...
This study reports an adaptation of acoustic sensing to detection of shellfish in the sediment. In this paper, we tried to detect Ruditapes philippinarum called asari in Japanese using a 1-MHz acoustic focus probe. Then, 2-D acoustic imaging of the shellfish in the sediment was performed, and the strong backscatter from the shell surface was detectable. Acoustic imaging was performed at some incident...
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