Document Detail

Photon-limited synthetic-aperture imaging for planet surface studies.
MedLine Citation:
PMID:  12206219     Owner:  NLM     Status:  PubMed-not-MEDLINE    
The carrier-to-noise ratio that results from phase-sensitive heterodyne detection in a photon-limited synthetic-aperture ladar (SAL) is developed, propagated through synthetic-aperture signal processing, and combined with speckle to give the signal-to-noise ratio of the resultant image. Carrier- and signal-to-noise ratios are defined in such a way as to be familiar to the optical imaging community. Design equations are presented to show that a 10-microm SAL in orbit around Mars can give centimeter-class resolution with reasonable laser power. SAL is harder to implement in the short-wave infrared and is probably not practical at visible wavelengths unless many separate images can be averaged. Some tutorial information on phase-sensitive heterodyne detection and on synthetic-aperture signal processing and image formation is provided.
Robert L Lucke; Lee J Rickard
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  41     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-09-02     Completed Date:  2002-09-05     Revised Date:  2003-11-03    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5084-95     Citation Subset:  -    
U.S. Naval Research Laboratory, Washington, DC 20375, USA.
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Erratum In:
Appl Opt. 2003 May 20;42(15):2766

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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