Accession Number : ADD016519

Title :   Method and Apparatus for Classifying Targets.

Descriptive Note : Patent, Filed 22 Oct 93, patented 9 Aug 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Dwyer, Roger F

Report Date : 09 Aug 1994

Pagination or Media Count : 14

Abstract : A method and apparatus for classifying objects based upon information contained in the fourth order cumulant derived from energy from the object. Successive pulse returns in active systems and samples in passive systems are converted into vectors based upon the fourth order cumulant information for each successive return or sample. The vectors for each such pulse are compared to corresponding class information based upon the corresponding fourth order cumulant information. The comparison uses loglikelihood ratios of the different pairs of classes. Decision making is based upon the value of each loglikelihood ratio in comparison with a class threshold.

Descriptors :   *TARGET CLASSIFICATION, *DOPPLER SONAR, *IDENTIFICATION SYSTEMS, *PATENTS, COMPARISON, DECISION MAKING, ENERGY, PASSIVE SYSTEMS, RATIOS, TARGET RECOGNITION, RADAR TARGETS, SONAR TARGETS, DETECTORS, ENERGY, SONAR ECHOES, SONAR PULSES, PASSIVE SYSTEMS, COMPARISON, DECISION MAKING, GROUPS(MATHEMATICS)

Subject Categories : Information Science
      Target Direction, Range and Position Finding
      Acoustic Detection and Detectors
      Miscellaneous Detection and Detectors
      Active & Passive Radar Detection & Equipment
      Administration and Management
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE