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.
Localization of underwater objects is required for numerous applications, including environmental monitoring, ropeless fishing, and equipment tracking. Ease of deployment and small, low-cost tracers running for years on a battery are incompatible with state-of-the-art solutions, especially in highly challenging multipa...
Peter Oppermann, Bernd-Christian Renner· 2026 Eighth Underwater Commu...· 0 citations
Underwater acoustic vector sensors (AVSs) are widely used for direction-of-arrival (DOA) estimation in underwater surveillance and marine bioacoustics applications. Compared with conventional hydrophone arrays, a single compact AVS offers greater flexibility and simpler deployment while enabling DOA estimation using th...
Guo-Song Zhang, He-Feng Dong, A. Cresci et al.· Acta Acustica· 0 citations
An underwater homing system is proposed, consisting of a pinger beacon that emits a known signal, which is received by a pair of piezoelectric transducers mounted on a umanned surface vehicle. A digital processing unit implements digital signal processing techniques based on time difference of arrival to estimate the d...
Victor H. Perez-Andrade, A. Orozco-Lugo, G. M. Galván-Tejada· International Conference on...· 0 citations
Accurate underwater velocity estimation remains a fundamental challenge in marine robotics due to the inherent limitations of conventional navigation technologies in GPS-denied environments. Doppler Velocity Logs (DVLs), while precise, are expensive, bulky, and consume power exceeding5 W, making them unsuitable for com...
The paper proposes a cost-effective solution for simultaneously determining the coordinates for a group of inexpensive autonomous underwater vehicles (AUVs). It is assumed that each AUV lacks expensive precision time system and absolute velocity log. The presented method for providing navigation support for a group of...
A. Scherbatyuk· Podvodnye issledovaniia i ro...· 0 citations
The problem of passive detection and localization of underwater noise sources, which is called bearing-only tracking, is considered. An overview of the methods of organizing the trajectories of the AUUV, equipped with passive sonar direction finders, which can improve the accuracy and reliability of solving this proble...
S. Pereselkov, A. F. Shcherbatyuk, Nikolay Ladykin et al.· Radioelectronics Nanosystems...· 0 citations
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