Accession Number : AD0808278

Title :   RANDOM PATTERN PROCESSING TECHNIQUES.

Descriptive Note : Interim technical rept. 18 Mar-18 Sep 66,

Corporate Author : PHILCO-FORD CORP BLUE BELL PA ADVANCED TECHNOLOGY CENTER

Personal Author(s) : Clarke, Charles E. ; Miamidian, Leon R. ; Urban, Stephen J. ; Jessen, Frederic A.

Report Date : JAN 1967

Pagination or Media Count : 216

Abstract : A study of random pattern processing techniques has been conducted to explore the utility of angular dispersion-compression antenna techniques for achieving multidimensional resolution, and hiding of the transmitted signal. Three basic areas of study are reported on: (1) creating of an angularly dispersed field pattern with good correlation properties and compatibility with hiding, (2) multidimensional resolution concepts, and (3) multidimensional optical processing. Results of coding theory are reviewed, and it is found that Legendre binary and Frank-Heimiller polyphase codes are suitable for dispersed pattern specification. Computer programs are described with implement an approximate least squares synthesis of ring arrays with dispersed patterns that conform to binary sequences. Results are given for a Legendre code of length 31.

Descriptors :   *ANTENNA RADIATION PATTERNS), (*ANTENNA ARRAYS, RANDOM VARIABLES, SYNTHESIS, FOURIER ANALYSIS, COMPUTER PROGRAMS, RESOLUTION, SYNTHETIC APERTURE RADAR, PHASED ARRAYS, BROADBAND, NUMERICAL ANALYSIS, LEAST SQUARES METHOD, ELECTROMAGNETIC WAVE FILTERS, ELECTRONIC SCANNERS, RADAR, FLOW CHARTING.

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE