Design of robust broadband beamformers with minimax criterion
Broadband beamformers are known to be sensitive to errors and mismatches in their array elements. This paper proposes a robust minimax beamformer design which takes into account sensor element characteristics. The design formulation minimizes robust integral squared error subject to relaxation const...
| Main Authors: | , |
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| Format: | Journal Article |
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Kyushu Tokai University
2015
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| Online Access: | http://www.ijicic.org/ijicic-14-01025.pdf http://hdl.handle.net/20.500.11937/35755 |
| _version_ | 1848754581912158208 |
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| author | Dam, Hai Huyen Heidi Nordholm, Sven |
| author_facet | Dam, Hai Huyen Heidi Nordholm, Sven |
| author_sort | Dam, Hai Huyen Heidi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Broadband beamformers are known to be sensitive to errors and mismatches in their array elements. This paper proposes a robust minimax beamformer design which takes into account sensor element characteristics. The design formulation minimizes robust integral squared error subject to relaxation constraints on the peak deviation error for the beamformer. The advantage of the proposed formulation is that the design allows a trade-off between the peak deviation error and the sensitivity of the minimax error with respect to variations in sensor element characteristics. This improvement has been achieved with almost no increase in complexity compared with the original minimax problem. Design examples demonstrate that the proposed beamformer is less sensitive with respect to variations in sensor element characteristics when compared to the traditional minimax beamformer with a minor degradation in beamformer performance. |
| first_indexed | 2025-11-14T08:42:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-35755 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:42:42Z |
| publishDate | 2015 |
| publisher | Kyushu Tokai University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-357552017-01-30T13:51:35Z Design of robust broadband beamformers with minimax criterion Dam, Hai Huyen Heidi Nordholm, Sven Second order cone programming Robust beamformer design Minimax Broadband beamformers are known to be sensitive to errors and mismatches in their array elements. This paper proposes a robust minimax beamformer design which takes into account sensor element characteristics. The design formulation minimizes robust integral squared error subject to relaxation constraints on the peak deviation error for the beamformer. The advantage of the proposed formulation is that the design allows a trade-off between the peak deviation error and the sensitivity of the minimax error with respect to variations in sensor element characteristics. This improvement has been achieved with almost no increase in complexity compared with the original minimax problem. Design examples demonstrate that the proposed beamformer is less sensitive with respect to variations in sensor element characteristics when compared to the traditional minimax beamformer with a minor degradation in beamformer performance. 2015 Journal Article http://hdl.handle.net/20.500.11937/35755 http://www.ijicic.org/ijicic-14-01025.pdf Kyushu Tokai University restricted |
| spellingShingle | Second order cone programming Robust beamformer design Minimax Dam, Hai Huyen Heidi Nordholm, Sven Design of robust broadband beamformers with minimax criterion |
| title | Design of robust broadband beamformers with minimax criterion |
| title_full | Design of robust broadband beamformers with minimax criterion |
| title_fullStr | Design of robust broadband beamformers with minimax criterion |
| title_full_unstemmed | Design of robust broadband beamformers with minimax criterion |
| title_short | Design of robust broadband beamformers with minimax criterion |
| title_sort | design of robust broadband beamformers with minimax criterion |
| topic | Second order cone programming Robust beamformer design Minimax |
| url | http://www.ijicic.org/ijicic-14-01025.pdf http://hdl.handle.net/20.500.11937/35755 |