Document Detail

Using filtering effects to identify objects.
MedLine Citation:
PMID:  22757514     Owner:  NLM     Status:  In-Data-Review    
Reflecting signals off of targets is a method widely used to locate objects, but the reflected signal also contains information that can be used to identify the object. In radar or sonar, the signal amplitudes used are small enough that only linear effects are present, so we can consider the effect of the target on the signal as a linear filter. Using the known effects of linear filters on chaotic signals, we can create a reference that allows us to match a particular target to a particular reflected signal. Furthermore, if some parts of this "filter" vary only slowly as the aspect angle of the object changes, we can produce a reference that averages out the parts that are highly angle dependent so that one reference can be used to identify the target over a range of angles.
T L Carroll; Frederic J Rachford
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chaos (Woodbury, N.Y.)     Volume:  22     ISSN:  1089-7682     ISO Abbreviation:  Chaos     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-07-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100971574     Medline TA:  Chaos     Country:  United States    
Other Details:
Languages:  eng     Pagination:  023107     Citation Subset:  IM    
US Naval Research Lab, Washington, DC 20375, USA.
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