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BACKWARD PROPAGATION BASED ALGORITHMS FOR HIGH-PERFORMANCE IMAGE FORMATIONLee, Hua, Lockwood, Stephanie, Tandon, James, Brown, Andrew 10 1900 (has links)
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / In this paper, we present the recent results of theoretical development and software implementation of a complete collection of high-performance image reconstruction algorithms designed for high-resolution imaging for various data acquisition configurations.
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[en] ANALYSIS OF GAIN REDUCTION FACTOR FOR CIRCULAR APERTURES LOCATED IN THE FRESNEL REGION / [pt] ANÁLISE DO FATOR DE REDUÇÃO DE GANHO PARA ABERTURAS CIRCULARES SITUADAS EM REGIÃO DE FRESNELEDSON PETTERSEN MARCONI 30 May 2007 (has links)
[pt] A presente tese analisa o problema da redução de ganho
entre aberturas circulares situadas em região de Fresnel,
tendo como objetivo a determinação do fator de correção a
ser introduzido nas medidas de ganho em campo próximo.
Para duas diferentes famílias de iluminação nas aberturas,
são apresentados um conjunto de tabelas para o fator de
redução de ganho bem côo suas curvas correspondentes. / [en] The following work analyzes the problem of gain reduction
between circular apertures located in the Fresnel region,
and aims to determine the correction factor to be applied
when measuring near field gains.
Two different sets of aperture illumination forms are
presented, for which sets of tables of the reduction
factor as well as the corresponding curves have been
developd.
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