Optical Target Detection.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1970
- Accession Number
- AD0878463
Entities
People
- Donald J. Curry
- James T. Thomasson