Accession Number:

AD0878463

Title:

Optical Target Detection.

Descriptive Note:

Final technical rept. 6 Mar 69-30 Jun 70,

Corporate Author:

LITTON SYSTEMS INC VAN NUYS CA DATA SYSTEMS DIV

Report Date:

1970-11-01

Pagination or Media Count:

141.0

Abstract:

The relative performance of various types of holographic filters including matched and inverse filters are studied begining with the optimizing of parameters connected with the generation of holographic filters-film handling, optical component configuration, data base selection. Filter performance is evaluated by recognizing real targets on reconnaissance imagery. A detectability measure for filter performance is defined and used to test the filters. The theory of operation and basic design of the unit is presented. The decision unit is under real-time control of a DDP-516 computer. The program listings are also included. Film processing techniques to produce filters using an extended linear range in the amplitude transmission vs. exposure curve are outlined. Film bleaching methods including nitric acid reversal are detailed and evaluated. Data are presented to compare the detectability performance of matched standard and reversed and inverse filters. Author

Subject Categories:

  • Photography
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE