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Synthetic aperture sonar for sub bottom imaging
The major problems associated with implementing synthetic apertures in sonar may be overcome by applying the technique to sub-bottom imaging. The use of a low frequency aids both penetration of the sediment and the attainment of long coherent apertures. The implementation of synthetic apertures real...
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| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2016
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| _version_ | 1867614367229411328 |
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| access_status_str | Open Access |
| author | Dutkiewicz, Marek Karol |
| author2 | Denbigh, P N |
| author_browse | Denbigh, P N Dutkiewicz, Marek Karol |
| author_facet | Denbigh, P N Dutkiewicz, Marek Karol |
| author_sort | Dutkiewicz, Marek Karol |
| collection | Thesis |
| description | The major problems associated with implementing synthetic apertures in sonar may be overcome by applying the technique to sub-bottom imaging. The use of a low frequency aids both penetration of the sediment and the attainment of long coherent apertures. The implementation of synthetic apertures realises a narrow fan beam. By directing this beam out sideways, a more rapid survey rate is possible than that achieved by the normal echo-sounding mode used in sub-bottom profiling. The synthetic aperture technique appears to offer significant advantages over that of parametric arrays, for high resolution sub-bottom imaging. Synthetic apertures have been implemented in a laboratory tank, under controlled conditions at a fresh water reservoir, and under realistic operational conditions at sea. Encouraging results have been obtained. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21962 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:50:54.977Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21962 Synthetic aperture sonar for sub bottom imaging Dutkiewicz, Marek Karol Denbigh, P N Synthetic apertures The major problems associated with implementing synthetic apertures in sonar may be overcome by applying the technique to sub-bottom imaging. The use of a low frequency aids both penetration of the sediment and the attainment of long coherent apertures. The implementation of synthetic apertures realises a narrow fan beam. By directing this beam out sideways, a more rapid survey rate is possible than that achieved by the normal echo-sounding mode used in sub-bottom profiling. The synthetic aperture technique appears to offer significant advantages over that of parametric arrays, for high resolution sub-bottom imaging. Synthetic apertures have been implemented in a laboratory tank, under controlled conditions at a fresh water reservoir, and under realistic operational conditions at sea. Encouraging results have been obtained. 2016-09-28T18:58:23Z 2016-09-28T18:58:23Z 1986 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/21962 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Synthetic apertures Dutkiewicz, Marek Karol Synthetic aperture sonar for sub bottom imaging |
| thesis_degree_str | Master's |
| title | Synthetic aperture sonar for sub bottom imaging |
| title_full | Synthetic aperture sonar for sub bottom imaging |
| title_fullStr | Synthetic aperture sonar for sub bottom imaging |
| title_full_unstemmed | Synthetic aperture sonar for sub bottom imaging |
| title_short | Synthetic aperture sonar for sub bottom imaging |
| title_sort | synthetic aperture sonar for sub bottom imaging |
| topic | Synthetic apertures |
| url | http://hdl.handle.net/11427/21962 |
| work_keys_str_mv | AT dutkiewiczmarekkarol syntheticaperturesonarforsubbottomimaging |