SNR Comparisons of Beamforming Strategies

This paper defines the echo signal-to-noise ratio (eSNR) for pulse-echo systems that adapts to the effects of shift-varying impulse responses, spatiotemporal coding, and various beamformers. Measurement techniques using point targets or random scattering media can be interrelated for a broad range o...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2007-05, Vol.54 (5), p.1010-1017
Main Authors: Jie Liu, Kang-Sik Kim, Insana, M.F.
Format: Article
Language:English
Subjects:
Acoustic scattering
Acoustic signal processing
Acoustics
Algorithms
Array signal processing
Coding
Dynamic tests
Exact sciences and technology
Exact solutions
Filtering
Focusing
Fundamental areas of phenomenology (including applications)
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Matched filters
Mathematical analysis
Physics
Reproducibility of Results
RF signals
Scattering
Sensitivity and Specificity
Signal processing
Signal to noise ratio
Spatial resolution
Spatiotemporal phenomena
Strategy
Ultrasonography, Doppler, Pulsed - methods
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Summary:This paper defines the echo signal-to-noise ratio (eSNR) for pulse-echo systems that adapts to the effects of shift-varying impulse responses, spatiotemporal coding, and various beamformers. Measurement techniques using point targets or random scattering media can be interrelated for a broad range of experimental conditions through the eSNR. The eSNR definitions are also illustrated by comparing a spatial matched filter (SMF) beamformer to conventional dynamic receive focusing methods to evaluate performance based on resolution arid sensitivity. Closed-form expressions are presented that predict eSNR gains from SMF approaches relative to other beamformers
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2007.346