Phase Diversity and Polarization Augmented Techniques for Active Imaging

Name: Phase Diversity and Polarization Augmented Techniques for Active Imaging
Brand: Biblioscholar
SKU: 9781288335084
Price: 19.61 EUR
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Autor: Peter M Johnson

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Väzba: Brožovaná

Vydavateľ: Biblioscholar

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

Informácie o knihe

Autor

Peter M Johnson

Jazyk

Angličtina

Väzba

Kniha - Brožovaná

Vydalo

2012

Stránok

216

EAN

9781288335084

ISBN

9781288335084

Enbook ID

08244457

Vydavateľ

Biblioscholar

Hmotnosť

395

Rozmery

189 x 246 x 12

Kompletný popis

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

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