Accession Number : AD0764713

Title :   Identification of Radar Targets by Pattern Recognition.

Descriptive Note : Special repts.,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Goggins,William B. , Jr

Report Date : 26 FEB 1973

Pagination or Media Count : 133

Abstract : The problem of identifying radar targets without predetermined knowledge or measurements of their aspect angle is examined. The proposed solution is to use radar magnitude and phase versus frequency data in the resonance region as input data for pattern recognition techniques. Practical methods are developed for measuring radar phase and dealing with polarization effects. Pattern recognition algorithms that optimize separation between pairs of input data are developed. These algorithms are based on digital spatial frequency filtering of curves of the radar return versus the radar frequency. The technique is simulated on a digital computer for three objects - a cylinder, a cone, and a step cylinder - all of about the same size. Results show that at most aspect angles, satisfactory recognition is attained at moderate signal-to-noise ratios. (Author)

Descriptors :   (*RADAR TARGETS, PATTERN RECOGNITION), TARGET RECOGNITION, IDENTIFICATION SYSTEMS, INTEGRAL TRANSFORMS, SCATTERING, SIMULATION

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE