Phase Diversity and Polarization Augmented Techniques for Active Imaging

Name: Phase Diversity and Polarization Augmented Techniques for Active Imaging
Brand: Biblioscholar
SKU: 9781288335084
Price: 20.56 EUR
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Автор: Peter M Johnson

Език:

Корици: С меки корици

Издател: Biblioscholar

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A firm understanding of the space environment is necessary to defend US access to space-based system...

Информация за книгата

Автор

Peter M Johnson

Език

Английски език

Корици

Книга - С меки корици

Издадена

2012

страници

216

EAN

9781288335084

ISBN

9781288335084

Enbook ID

08244457

Издател

Biblioscholar

Теглоt

395

Размери

189 x 246 x 12

Пълно описание

A firm understanding of the space environment is necessary to defend US access to space-based systems. Conventional imaging systems have been developed to gather information on space-based objects, but they are incapable of imaging objects in the earth's shadow. In order close this gap in imaging-system coverage, an active-illumination based approach must be used. To facilitate this, a multi-frame active phase diversity imaging (APDI) algorithm is derived and demonstrated for the statistics of coherent light. In addition to conventional focal-plane and diversity-plane data, a statistical description for the pupil-plane intensity distribution is formed and included in the derivation. The algorithm is implemented and characterized using a Monte Carlo approach. Analysis shows that the algorithm is robust, that the effect of system configuration on optimal algorithm parameters is minimal, that the algorithm is insensitive to detection noise for SNR 7, and that it performs well for SNR's as low as 2. Furthermore, it's shown that introduction of pupil-plane data on average results in a 60% better image reconstruction from dynamically aberrated data than is obtained using only focal-plane and diversity-plane data.

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Phase Diversity and Polarization Augmented Techniques for Active Imaging

Информация за книгата

Пълно описание

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