Computer-Aided Detection.
Abstract
A technique has been developed to accomplish computer-aided detection and classification of active sonar signals. The technique is based on the theory of sequential hypothesis testing and allows a digital computer to reduce the volume of input data, perform ping-to-ping integration, and present the operator with a meaningful display at a reduced clutter rate compared to typical operational displays. The necessary logical and arithmetic operations are simple and allow real-time implementation of the technique on a modest state-of-the-art computer. Detailed expressions are derived which describe the relationships between computer loading and application of the computer aided technique. A method of adaptively varying the input threshold is discussed and is shown to significantly reduce computer requirements without degrading performance appreciably. A comparison of simulated displays driven with a conventional signal processor and the computer-aided technique shows that the computer-aided technique provides consistently brighter target tracks than the conventional processor with equal clutter densities. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 19, 1968
- Accession Number
- ADA032758
Entities
People
- H. D. Record
- Hugh A. Reeder
Organizations
- Tracor