Open AccessUnderwater Navigation System Based on Doppler Shift – Measurements and Error Estimations
Author(s) -
Z. Ostrowski,
R. Salamon,
Iwona Kochańska,
J. Marszal
Publication year - 2020
Publication title -
polish maritime research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.374
H-Index - 21
eISSN - 2083-7429
pISSN - 1233-2585
DOI - 10.2478/pomr-2020-0019
Subject(s) - underwater , acoustics , doppler effect , transmitter , computer science , geology , physics , telecommunications , channel (broadcasting) , oceanography , astronomy
A new acoustic navigation system was developed to determine the position and speed of moving underwater objects such as divers and underwater vehicles. The path of an object and its speed were determined by the Doppler shifts of acoustic signals emitted by a transmitter placed on the object and received by four hydrophones installed at the periphery of the monitored body of water. The position and speed measurements were affected by errors mainly caused by acoustic reflections (returns) from the water body boundaries and surface reverberations. This paper discusses the source of the disturbances with the results of a simulation test and experimental measurements. It was demonstrated that the magnitude of the errors could be acceptable in most of the potential applications of the acoustic navigation system.