Imaging Marine Fauna with a Tritech Gemini 720i Sonar
Multibeam sonar systems are increasingly used to detect, quantify and monitor behaviour of marine fauna. Over ranges of tens to hundreds of metres, animals can be detected as targets. However, at shorter ranges (typically <10 m) and in good conditions, high-frequency (>1 kHz) sonar sys...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Australian Acoustical Society
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/50142 |
| _version_ | 1848758404766498816 |
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| author | Parsons, M. Fenny, E. Lucke, K. Osterrieder, S. Jenkins, G. Saunders, Ben Jepp, P. Parnum, I. |
| author_facet | Parsons, M. Fenny, E. Lucke, K. Osterrieder, S. Jenkins, G. Saunders, Ben Jepp, P. Parnum, I. |
| author_sort | Parsons, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Multibeam sonar systems are increasingly used to detect, quantify and monitor behaviour of marine fauna. Over ranges of tens to hundreds of metres, animals can be detected as targets. However, at shorter ranges (typically <10 m) and in good conditions, high-frequency (>1 kHz) sonar systems can provide high-quality images earning the term ‘acoustic cameras’ and have become particularly advantageous for discriminating and counting fish. However, limitations of power and the significant increase in attenuation with frequency limit the achievable range of such acoustic cameras. Systems that operate at frequencies between those of mapping and fisheries sonar (typically<400 kHz) and acoustic cameras (˜1MHz) are often used for short-range navigation and to evaluate underwater structures. While these systems produce images at reduced resolution compared to acoustic cameras, they may also be capable of distinguishing features of marine fauna and do so at greater ranges. This study utilised a Tritech Gemini 720i imaging sonar to produce images from 14 species of fauna at close range. It assessed some simple morphological parameters, such as length and breadth, and highlighted the possibilities of using these to categorise targets. It also provided a coarse description of issues associated with using such a system for monitoring marine animals. |
| first_indexed | 2025-11-14T09:43:27Z |
| format | Journal Article |
| id | curtin-20.500.11937-50142 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:43:27Z |
| publishDate | 2017 |
| publisher | Australian Acoustical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-501422017-09-13T15:50:27Z Imaging Marine Fauna with a Tritech Gemini 720i Sonar Parsons, M. Fenny, E. Lucke, K. Osterrieder, S. Jenkins, G. Saunders, Ben Jepp, P. Parnum, I. Multibeam sonar systems are increasingly used to detect, quantify and monitor behaviour of marine fauna. Over ranges of tens to hundreds of metres, animals can be detected as targets. However, at shorter ranges (typically <10 m) and in good conditions, high-frequency (>1 kHz) sonar systems can provide high-quality images earning the term ‘acoustic cameras’ and have become particularly advantageous for discriminating and counting fish. However, limitations of power and the significant increase in attenuation with frequency limit the achievable range of such acoustic cameras. Systems that operate at frequencies between those of mapping and fisheries sonar (typically<400 kHz) and acoustic cameras (˜1MHz) are often used for short-range navigation and to evaluate underwater structures. While these systems produce images at reduced resolution compared to acoustic cameras, they may also be capable of distinguishing features of marine fauna and do so at greater ranges. This study utilised a Tritech Gemini 720i imaging sonar to produce images from 14 species of fauna at close range. It assessed some simple morphological parameters, such as length and breadth, and highlighted the possibilities of using these to categorise targets. It also provided a coarse description of issues associated with using such a system for monitoring marine animals. 2017 Journal Article http://hdl.handle.net/20.500.11937/50142 10.1007/s40857-016-0076-1 Australian Acoustical Society restricted |
| spellingShingle | Parsons, M. Fenny, E. Lucke, K. Osterrieder, S. Jenkins, G. Saunders, Ben Jepp, P. Parnum, I. Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title | Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title_full | Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title_fullStr | Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title_full_unstemmed | Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title_short | Imaging Marine Fauna with a Tritech Gemini 720i Sonar |
| title_sort | imaging marine fauna with a tritech gemini 720i sonar |
| url | http://hdl.handle.net/20.500.11937/50142 |