Single hydrophone source localization

Document Type

Article

Publication Date

7-1-2000

Abstract

The method presented in this paper assumes that the received signal is a linear combination of delayed and attenuated uncorrelated replicas of the source emitted waveform. The set of delays and attenuations, together with the channel environmental conditions, provide sufficient information for determining the source location. If the transmission channel is assumed known, the source location can be estimated by matching the data with the acoustic field predicted by the model conditioned on the estimated delay set. This paper presents alternative techniques that do not directly attempt to estimate time delays from the data but, instead, estimate the subspace spanned by the delayed source signal paths. Source localization is then done using a family of measures of the distance between that subspace and the subspace spanned by the replicas provided by the model. Results obtained on the INTIMATE'96 data set, in a shallow-water acoustic channel off the coast of Portugal, show that a sound source emitting a 300-800-Hz LFM sweep could effectively be localized in range or depth over an entire day.

Identifier

0034230231 (Scopus)

Publication Title

IEEE Journal of Oceanic Engineering

External Full Text Location

https://doi.org/10.1109/48.855379

ISSN

03649059

First Page

337

Last Page

346

Issue

3

Volume

25

Fund Ref

Office of Naval Research

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