| Analysis of worst-case phase quantization sidelobes in focused beamforming. | |
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MedLine Citation:
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PMID: 18267670 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The effect of phase quantization errors on the sidelobe level in a phased-array beamformer is considered. The theory of random and periodic phase errors is reviewed. Periodic phase errors occur for an unfocused array with uniform element distance and give rise to discrete sidelobes. The main result of the paper is an analysis of the periodic phase error in the case that the beamformer is focused. An estimate for the worst-case discrete sidelobe level as a function of focal depth is derived. The theory is illustrated and verified by simulations. |
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Authors:
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S Holm; K Kristoffersen |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on ultrasonics, ferroelectrics, and frequency control Volume: 39 ISSN: 0885-3010 ISO Abbreviation: IEEE Trans Ultrason Ferroelectr Freq Control Publication Date: 1992 |
Date Detail:
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Created Date: 2008-02-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882735 Medline TA: IEEE Trans Ultrason Ferroelectr Freq Control Country: United States |
Other Details:
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Languages: eng Pagination: 593-9 Citation Subset: - |
Affiliation:
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Vingmed Sound AS, Lysaker. |
Export Citation:
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Descriptor/Qualifier:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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