Source:http://linkedlifedata.com/resource/pubmed/id/18345167
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
16
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| pubmed:dateCreated |
2008-3-17
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| pubmed:abstractText |
A class of adaptive-optics problems is described in which phase distortions caused by atmospheric turbulence are corrected by adaptive wave-front reconstruction with a deformable mirror, i.e., the control loop that drives the mirror adapts in real time to time-varying atmospheric conditions, as opposed to the linear time-invariant control loops used in conventional adaptive optics. The basic problem is posed as an adaptive disturbance-rejection problem with many channels. The solution given is an adaptive feedforward control loop built around a multichannel adaptive lattice filter. Simulation results are presented for a 1-m telescope with both one-layer and two-layer atmospheric turbulence profiles. These results demonstrate the significant improvement in imaging resolution produced by the adaptive control loop compared with a classical linear time-invariant control loop.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jun
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| pubmed:issn |
0003-6935
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
1
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| pubmed:volume |
39
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
2525-38
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| pubmed:year |
2000
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| pubmed:articleTitle |
Adaptive optics: wave-front correction by use of adaptive filtering and control.
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| pubmed:affiliation |
Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095-1597, USA. gibson@seas.ucla.edu
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| pubmed:publicationType |
Journal Article
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