Related Experiment Video
Updated: Sep 2, 2026

A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
Single-hydrophone bearing estimation for long-range underwater navigation
Karim G Sabra1, Davis Rider1, Laurent Grare2
1Georgia Institute of Technology, Atlanta, Georgia 30306, USA.
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.

