Accession Number : AD0825131

Title :   IMPROVED ANGULAR RESOLUTION TECHNIQUES.

Descriptive Note : Final rept., 12 Apr 66-12 Jul 67,

Corporate Author : AIRBORNE INSTRUMENTS LAB DEER PARK NY

Personal Author(s) : DeSize, L. K. ; Gery, S. W.

Report Date : DEC 1967

Pagination or Media Count : 129

Abstract : This report describes a study and investigation of the split aperture technique for antenna intrabeam signal processing. This technique makes use of phase and amplitude information received on a number of subapertures of a large aperture antenna, in conjunction with a priori information on the number of targets in the antenna beam, to provide an improvement in angular resolution. A computer simulation is described which estimates the location of the multiple targets as a function of the relative target amplitudes and phases, S/N ratio, position in the beam and system measuring accuracy. Results obtained from an experimental setup to simulate two targets are presented and compared with the calculated results. Suggestions for possible system implementations are given. Section 1 presents a historical development of the problem, Section 2 a theoretical formulation of the split aperture technique, Section 3 the experimental measurements, and Sections 4 and 5 the conclusions and recommendations. The computer programs and signal processing techniques are presented. (Author)

Descriptors :   (*RADAR ANTENNAS, RESOLUTION), (*TARGET DISCRIMINATION, RADAR ANTENNAS), ANTENNA APERTURES, RADAR SIGNALS, PROCESSING, RADAR TARGETS, COMPUTER PROGRAMS, SIMULATION, MONTE CARLO METHOD, ANTENNA ARRAYS, NOISE.

Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE