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Clutter suppression and classification using twin inverted pulse sonar (TWIPS)

Clutter suppression and classification using twin inverted pulse sonar (TWIPS)
Clutter suppression and classification using twin inverted pulse sonar (TWIPS)
This paper describes the detection and classification of targets against clutter by distinguishing between linear and nonlinear scatterers and, further, by distinguishing those nonlinear targets that scatter energy at the even-powered harmonics from those that scatter in the odd-powered harmonics. This is done using twin inverted pulse sonar (TWIPS), which can also, in some manifestations, require no range correction (and therefore does not require the a priori knowledge of the environment needed for most remote detection technologies). The method applies, in principle, to a range of sensor technologies, including the use of radar to distinguish between circuitry, metal and soil; Light Detection and Ranging (LIDAR) to detect combustion products; and Magnetic Resonance Imaging (MRI). A sonar application is demonstrated, detecting objects in bubbly water (including in the wake of a ship of 3953 gross register tonnage). A man-made sonar that can operate in bubbly water is relevant: Cold War sonar is not optimized for the shallow coastal waters that typify many current operations. The US Navy use dolphins in such waters. TWIPS arose as a demonstration that echolocation was possible in bubbly water in response to a video showing dolphins generating bubble nets when hunting: if echolocation were impossible in these nets, then during this hunt, the dolphins would have blinded their sonar
acoustics, bubbles, wakes, dolphins, sonar, radar
1364-5021
3453-3478
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Finfer, D.C.
c2aa2745-6348-4149-904c-0dfcfe3da7a8
White, P.R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Chua, Gim Hwa
88fb5c26-2ad9-4bf8-b947-707243de8f49
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Finfer, D.C.
c2aa2745-6348-4149-904c-0dfcfe3da7a8
White, P.R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Chua, Gim Hwa
88fb5c26-2ad9-4bf8-b947-707243de8f49
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628

Leighton, T.G., Finfer, D.C., White, P.R., Chua, Gim Hwa and Dix, J.K. (2010) Clutter suppression and classification using twin inverted pulse sonar (TWIPS). Proceedings of the Royal Society A, 466 (2124), 3453-3478. (doi:10.1098/rspa.2010.0154).

Record type: Article

Abstract

This paper describes the detection and classification of targets against clutter by distinguishing between linear and nonlinear scatterers and, further, by distinguishing those nonlinear targets that scatter energy at the even-powered harmonics from those that scatter in the odd-powered harmonics. This is done using twin inverted pulse sonar (TWIPS), which can also, in some manifestations, require no range correction (and therefore does not require the a priori knowledge of the environment needed for most remote detection technologies). The method applies, in principle, to a range of sensor technologies, including the use of radar to distinguish between circuitry, metal and soil; Light Detection and Ranging (LIDAR) to detect combustion products; and Magnetic Resonance Imaging (MRI). A sonar application is demonstrated, detecting objects in bubbly water (including in the wake of a ship of 3953 gross register tonnage). A man-made sonar that can operate in bubbly water is relevant: Cold War sonar is not optimized for the shallow coastal waters that typify many current operations. The US Navy use dolphins in such waters. TWIPS arose as a demonstration that echolocation was possible in bubbly water in response to a video showing dolphins generating bubble nets when hunting: if echolocation were impossible in these nets, then during this hunt, the dolphins would have blinded their sonar

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More information

Published date: December 2010
Keywords: acoustics, bubbles, wakes, dolphins, sonar, radar
Organisations: Ocean and Earth Science, Signal Processing & Control Group, Fluid Dynamics & Acoustics Group

Identifiers

Local EPrints ID: 166355
URI: http://eprints.soton.ac.uk/id/eprint/166355
ISSN: 1364-5021
PURE UUID: 7589dd28-f4fb-4996-ad61-336938bd5497
ORCID for T.G. Leighton: ORCID iD orcid.org/0000-0002-1649-8750
ORCID for P.R. White: ORCID iD orcid.org/0000-0002-4787-8713

Catalogue record

Date deposited: 28 Oct 2010 07:30
Last modified: 17 Dec 2019 02:02

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Contributors

Author: T.G. Leighton ORCID iD
Author: D.C. Finfer
Author: P.R. White ORCID iD
Author: Gim Hwa Chua
Author: J.K. Dix

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