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method and apparatus for sensor fusionMethod and apparatus for fusion of data from optical and radar sensors by error minimization procedure is presented. The method was applied to the problem of shape reconstruction of an unknown surface at a distance. The method involves deriving an incomplete surface model from an optical sensor. The unknown characteristics of the surface are represented by some parameter. The correct value of the parameter is computed by iteratively generating theoretical predictions of the radar cross sections (RCS) of the surface, comparing the predicted and the observed values for the RCS, and improving the surface model from results of the comparison. Theoretical RCS may be computed from the surface model in several ways. One RCS prediction technique is the method of moments. The method of moments can be applied to an unknown surface only if some shape information is available from an independent source. The optical image provides the independent information.
Document ID
19910016003
Document Type
Other - Patent
Authors
Krishen, Kumar
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Shaw, Scott
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Defigueiredo, Rui J. P.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 14, 2013
Publication Date
April 2, 1991
Subject Category
COMMUNICATIONS AND RADAR
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MSC-21334-1|US-PATENT-5,005,147
Patent Application
US-PATENT-APPL-SN-292130

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