Accession Number : ADA257594


Title :   An Optical Consensus Correlator for Cluttered Targets


Descriptive Note : Final technical rept. Jun 1991-Jun 1992


Corporate Author : AERODYNE RESEARCH INC BILLERICA MA


Personal Author(s) : Putnam, Roger S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257594.pdf


Report Date : Aug 1992


Pagination or Media Count : 44


Abstract : The phase-only Consensus Correlator improves the probability of detection of targets obscured by other objects such as a stand of trees. The technique involves masking out most of the input scene and using a standard correlator to search for small pieces of the expected target shape. The areas of the input scene that are found to contain pieces of the target are combined in a final correlation. The Consensus Correlator reduces the transfer of noise that is interspersed with pieces of the target in the input scene to the vicinity of the correlation spike in the correlation plane. A preliminary investigation of an appropriate figure of merit for comparing correlation spikes produced by different inputs and phase-only filters is also presented.


Descriptors :   *COMPUTER PROGRAMS , *CLUTTER , *PATTERN RECOGNITION , *NOISE , *OPTICAL CORRELATORS , *TARGET DETECTION , INPUT , DETECTION , PHASE , TREES , PATTERNS , CORRELATORS , SPIKES , FIGURE OF MERIT , MASKING , TRANSFER , FILTERS , RECOGNITION , STANDARDS , CORRELATION , TARGETS , SIGNAL TO NOISE RATIO , PROBABILITY , SHAPE


Subject Categories : Cybernetics
      Target Direction, Range and Position Finding
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE