Description: \\\\FDAG\TWIPS\ISVR_header.jpgRepository for TWIPS data

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Data for the paper: T. G. Leighton, D. C. Finfer, P. R. White , G.-H. Chua &  J. K. Dix, "Clutter suppression and classification using Twin Inverted Pulse Sonar (TWIPS)", Proceedings of the Royal Society A, 466, 3453-3478 (Request a copy from


Data for Figure 9: Measurement data (tank test)

Data for Figure 10: Simulation data (tank test)

Data for Figure 12: Measurement data (ship)

Data for Figure 13: Simulation data (ship)

Readme file


Data for the paper: T. G. Leighton, D. C. Finfer, G.H. Chua, P. R. White &  J. K. Dix, "Clutter suppression and classification using Twin Inverted Pulse Sonar in ship wakes", Journal of the Acoustic Society of America (in preparation)


Data for Figure 3: Measurement data (moored test)

Data for Figure 4: Simulation data (‘small’ vessel)

Data for Figure 5: Measurement data (RV Bill Conway)

Data for Figure 7: Measurement data (the Whitchallenger)

Data for Figure 8: Simulation data (‘large’ vessel)

Readme file


For all usage of downloaded data, please attribute to the above-mentioned paper.


Click here for movie taken from RV Bill Conway as it enters the wake, taking TWIPS data, of the MV Red Osprey.

Click here to find pdfs of papers by the authors in the reference list of this Proceedings of the Royal Society A paper.


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Photographs looking down into the tank. To give scale, in each one the ‘top cross-bar’ is labelled: it is 0.8 m long and at a depth of 2.03 m. (a) Photograph looking down into the water tank from above, showing the target (T) and source (S). The hose (H) leads down to the bubble generator, whose tip is arrowed (G). The bubble cloud can just be seen forming in front of this tip. In this figure the target is at a range of 1.42 m from the source but this could be varied for different experiments (the tank test data in this paper is all for a target range of 2.6 m). (b) A similar view to part (a), but here the target is obscured by the rising bubble cloud, which fills most of the space between the source and target, and in which the target is enveloped. The ropes upon which the target is suspended can be seen disappearing in to the cloud. The rig holding the source is still visible. (c) A more spatially uniform but less dense bubble cloud is imaged. The acoustic data of this paper are taken with this cloud.


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Mounting the four TWIPS transducers into the towfish for the sea trials


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The towfish is pulled along using a cable (the near-vertical black line at the centre of the image) mounted from the A-frame of the RV Bill Conway, whilst the slack from the electrical cables is taken up manually  (image taken prior to entering wake, as we leave harbour)

Data acquisition in the cabin of the RV Bill Conway


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Photographs taken as the RV Bill Conway travels the wake, taking TWIPS data, of the MV Red Osprey


Other links:

Publications and radio interviews of TG Leighton

University web page for TG Leighton

Centre for Ultrasonics and Underwater Acoustics