Work

Single-hydrophone bearing estimation for long-range underwater navigation

Year: 2026

Type: article

Abstract: Beacon acoustic sources can aid long-range underwater navigation since using an inertial navigation system alone becomes inaccurate over long duration. Here, estimates of the relative position of a single hydrophone mounted on a small underwater platform are used only while recording a 2-min-long low-frequency (200-300 Hz) transmission from a beacon source located at depth ∼1100 m and ranges up to ∼148 km in the vicinity of two seamounts. Accounting for the hydrophone motion in the matched-filtering process during the source transmission allows to estimate the bearing of this single beacon source for navigation purposes despite environmental complexity.

Source: JASA Express Letters

DOI: 10.1121/10.0046290

Authors: Karim G. Sabra, Davis Rider, Laurent Grare, Matthew A. Dzieciuch, Luc Lenain

Institutions: Georgia Institute of Technology, Scripps Institution of Oceanography, University of California San Diego

Language: English

Topic: Underwater Vehicles and Communication Systems

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Office of Naval Research

Awards: G2904123513, G3021878081, G6972944590, G8876996369