Through-the-sensor sub-bottom imaging using the self-noise of an autonomous underwater vehicle

2025/01/01 by Karim G. Sabra, Paige Pfenninger, Ying-Tsong Lin · 1 voice · 1 citation
Earth and Planetary Sciences · Engineering · #Seismic Waves and Analysis #Underwater Acoustics Research #Underwater Vehicles and Communication Systems

paper · doi:10.1121/10.0035420

openalex publication_date 2025/01/01 · openalex created_date 2025/01/24 · openalex updated_date 2026/06/11

Abstract

This work demonstrates the feasibility of performing through-the-sensor (TTS) sub-bottom imaging using low-frequency ([100 Hz-1kHz]) self-noise generated by the propulsion of an autonomous underwater vehicle (AUV) acting as a source of opportunity. The self-noise was recorded by a short towed horizontal line array (11.4 m aperture) by the same AUV while it operated ∼35 m above the seabed along a range-dependent section at the New England shelf break. The seabed and sub-bottom layers imaged by this TTS method were found to be consistent with the images simultaneously obtained at higher frequency [2.5-4.5 kHz] using a conventional active source mounted on the AUV.

Cited by

• Introduction to the special issue on assessing sediment heterogeneity on continental shelves and slopes

Discussions

• JASA EXPRESS LETTERS The January cover features Figure 2 from "Through-the-sensor sub-bottom imaging using the self-noise of an autonomous underwater vehicle." The image is anexample of the hydrophon [bsky, 1 points, 0 comments]

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