Estimation of the Bistatic Echolocation from Underwater Target using Ship Noise based on Normal-Mode Model

Document Type : Original Research Paper

Authors

1 Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Electrical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad

3 Department of Electrical & Computer Engineering, Dalhousie University, Halifax, NS, Canada

Abstract

In this paper, a novel application that uses the broadband noise from a ship-of-opportunity to estimate the scattering from underwater objects is reported. The propagation is based on the normal-mode model. The source localization (location of propeller) is initially realized using incoherent broadband matched-field processing. Then, by utilizing an estimator that relies on Normal-Modes, the target echo below the sea surface is calculated to evaluate the location of the target. The proposed idea is illustrated using simulation and then verified using the acoustic data from a 2019 underwater communication trial in Grand Passage, Nova Scotia in Canada. Experimental results show that the proposed technique can be a reliable signaling method and environmentally friendly that can be applied to the fields of underwater communication and ocean monitoring for a shallow water environment.

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Articles in Press, Accepted Manuscript
Available Online from 24 November 2020
  • Receive Date: 23 October 2020
  • Revise Date: 18 November 2020
  • Accept Date: 24 November 2020