2004
DOI: 10.1016/j.ultras.2003.12.004
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Application of vernier thinning techniques to segmented annular arrays

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Cited by 4 publications
(3 citation statements)
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“…The most commonly used techniques, aimed at grating lobe reduction in directivity patterns, attempt to break up the regular element spacing or regular element size which gives rise to grating lobes. Current techniques of reducing grating lobes include sparse element spacing, [4][5][6][7][8][9][10][11][12][13][14][15][16][17] annular rings of elements, [18][19][20][21][22] use of adjacent staggered arrays, [23][24][25] pseudorandom continuous wave ͑cw͒ signals, [26][27][28] and exploitation of harmonic imaging. 29 There are many existing arrays with regularly spaced elements that have no practical means for reducing their grating lobes.…”
Section: Introductionmentioning
confidence: 99%
“…The most commonly used techniques, aimed at grating lobe reduction in directivity patterns, attempt to break up the regular element spacing or regular element size which gives rise to grating lobes. Current techniques of reducing grating lobes include sparse element spacing, [4][5][6][7][8][9][10][11][12][13][14][15][16][17] annular rings of elements, [18][19][20][21][22] use of adjacent staggered arrays, [23][24][25] pseudorandom continuous wave ͑cw͒ signals, [26][27][28] and exploitation of harmonic imaging. 29 There are many existing arrays with regularly spaced elements that have no practical means for reducing their grating lobes.…”
Section: Introductionmentioning
confidence: 99%
“…Uno de los objetivos fundamentales de esta tesis era el estudio de diferentes métodos de focalización dinámica en recepción, sin tener en cuenta el efecto de la emisión en la formación de la imagen. Sin embargo, hemos considerado interesante estudiar a nivel práctico el efecto de emitir focalizando en un punto, ya que ésta es una forma habitual de trabajar en la formación de imagen ultrasónica, aunque existen otros modos [Üstümer, 2001], [Godoy, 2004], [Ramamurthy, 2002].…”
Section: Resultados Con Foco Fijo En Emisión Y Focalización Dinámica ...unclassified
“…Un complejidad ha motivado la búsqueda de técnicas que permitan reducirla mediante una adecuada elección de sub-aperturas activas en emisión y en recepción [Turnbull, 1991], [Lockwood, 1997]. La estructura de anillos segmentados mostrada en la Figura 3.2b) ayuda a reducir estos requisitos para tamaños de apertura básicamente equivalentes , [Godoy, 2004].…”
Section: Arrays Ultrasónicos Uni Y Bi-dimensionalesunclassified