Auv localization in an underwater acoustic positioning system

Authors

  • Dugald Thomson School of Earth and Ocean Science, University of Victoria, Victoria, BC, Canada
  • Stan E. Dosso School of Earth and Ocean Science, University of Victoria, Victoria, BC, Canada

Keywords:

Acoustic fields, Linearization, Navigation systems, Underwater acoustics, Acoustic systems, Ground truth, High-precision, Linearization errors, Localization accuracy, Long baseline positioning, Onboard navigation systems, Posterior uncertainties, Source location, Test case, Uncertainty estimates, Underwater acoustic positioning

Abstract

The University of Victoria is designing an Integrated Acoustic System (IAS), a high-precision underwater acoustic positioning system, similar in operation to a commercial long baseline positioning unit. The IAS will be capable of localizing a target within the lAS range to a sufficient accuracy for use as ground truth for testing onboard navigation systems. The non-linear localization accuracy for a target is estimated and the target positional uncertainty is mapped as a function of position within the range by estimating the linearized posterior uncertainties of the source-location. Results show excellent agreement with the true locations, and linearization error is seen to be small. Since linearization errors are shown to be small for the test cases investigated above, linearized uncertainty estimates can now be used to estimate target positional uncertainty for locations throughout the range with a high level of confidence.

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Published

2012-09-01

How to Cite

1.
Thomson D, Dosso SE. Auv localization in an underwater acoustic positioning system. Canadian Acoustics [Internet]. 2012 Sep. 1 [cited 2021 Jul. 25];40(3):84-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2551

Issue

Section

Proceedings of the Acoustics Week in Canada

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