Accession Number : AD0619688

Title :   NON-PLANAR ARRAY 'THINNING' STUDY.

Descriptive Note : Final technical rept. for 18 Mar 64-18 Mar 65,

Corporate Author : PHILCO BLUE BELL PA AERONUTRONIC DIV

Personal Author(s) : Clarke,Charles E. ; Shanley,Thomas J. B.

Report Date : JUN 1965

Pagination or Media Count : 135

Abstract : The Final Technical Report is given on an investigation to establish guidelines for the design of thinned phased array antennas of spherical configuration. The array designs investigated would have approximately 100,000 elements if completely filled and are thinned from 50% to 90%. Different degrees of element directivity and amplitude taper were considered. (Space taper is not practicable with this type of array). The main accomplishments of this program are: a. The evolution of a systematic method of positioning many approximately equispaced elements on a sphere, and the preparation of a computer program to obtain the coordinates of these locations, for a filled-in array of approximately 100,000 elements. b. Development of spherical array designs based on alternative constrained random thinning methods, and generation of sample array patterns on a digital computer. c. Development of analytical techniques which predicted the important pattern parameters of statistically thinned spherical arrays in close agreement with computer data. d. A theory predicting the pattern parameters of statistically thinned spherical arrays, which takes the amplitude and phase errors of the elements into account. (Author)

Descriptors :   (*PHASED ARRAYS, RADAR ANTENNAS), (*RADAR ANTENNAS, PHASED ARRAYS), ANTENNA COMPONENTS, ANTENNAS, RADAR SCANNING, SPHERES

Distribution Statement : APPROVED FOR PUBLIC RELEASE