Accession Number : ADD009698

Title :   Kalman Filter Preprocessor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Giles,Michael K

Report Date : 15 Jun 1982

Pagination or Media Count : 21

Abstract : An optical signal preprocessor for computing the input functions required to utilize an extended Kalman filter algorithm. An incoming stream of time-varying images is integrated to form a reference image, which is then subtracted from each subsequently sampled image. The result is digitized for use with the extended Kalman filter algorithm. The reference image is also fed through a spatial filter and then input to two light valve image subtraction systems to produce difference image approximations of two partial derivatives. These derivative functions are then digitized and utilized as inputs to the extended Kalman filter algorithm. (Author)

Descriptors :   *Patent applications, *Preprocessing, *Kalman filtering, *Signal processing, *Algorithms, *Optical images, Questionnaires, Image processing, Computations, Optical properties, Digital computers, Input

Subject Categories : Theoretical Mathematics
      Computer Hardware
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE