Accession Number : AD0848140

Title :   Radiation of Spatially Incoherent Noise: Circular and Rectangular Plane Sources.

Descriptive Note : Final rept. 1 Oct 67-30 Sep 68,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s) : Salmon, Vincent ; Sawyers, Kenneth N.

Report Date : NOV 1968

Pagination or Media Count : 50

Abstract : The concept of spatially incoherent (SI) radiation has been applied to extended sources. The fields of SI-radiating circular disks and rectangles have been calculated for uniform radiation and for a square law decrease (of power radiated per unit area) toward source edges. The shaded disk has a field much like that of a uniform disk of diameter 20% less. All fields show regions with zero deviation from the (inverse square law) field of a point source radiating from the center. Programs in BASIC are provided for detailed calculations of the actual deviations at any field point. (Author)

Descriptors :   *SOUND TRANSMISSION), (*UNDERWATER SOUND, SHIP NOISE, COMPUTER PROGRAMS, SOURCES.

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE