| EPSRC Reference: |
GR/M38094/01 |
| Title: |
RAPID ASSESSMENT OF BUBBLE POPULATION IN SHALLOW WATER FOR ENHANCEMENT OF HIGH-FREQUENCY SONAR OPERATION |
| Principal Investigator: |
Leighton, Professor T |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Inst of Sound and Vibration Research |
| Organisation: |
University of Southampton |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
19 July 1999 |
Ends: |
18 July 2002 |
Value (£): |
109,499
|
| EPSRC Research Topic Classifications: |
| Eng. Dynamics & Tribology |
|
|
| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
Seven months into a DERA project into enhancing the ability of high frequency sonar to detect objects in bubbly water, it became clear that development of a monitor for the local bubble population was vital. This is because enhancement depends on exploitation of those bubbles having radii resonant with the insonifying field: bubbles significantly larger than this still scatter strongly but, since no resonance is involved, are not amendable to enhancement. The proposed work will construct a device to count and size the bubbles in the region of the sonar source, by inverting for the acoustic attenuation and sound speed measured along a hydrophone array. This would normally be difficult, the matrices involves being ill-conditioned, except that the PI has developed a system for making absolute and direct bubble measurements in a 1 ml volume. Whilst being too small for use in the sonar solution, this measurement volume can be positioned in the array to assist the inversion. Artificial bubble clouds will be monitored, the data being input to models to optimise the sonar pulse in the test tank. The monitor and sonar will be interfaced and then tested in the surf zone. DERA will supply sonar and targets.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.soton.ac.uk |