Accession Number : AD0432009

Title :   APPLICABILITY OF DUAL-PATH SOUND PROPAGATION MEASUREMENTS TO TEMPERATURE DETERMINATION OVER A SIX-MILE PATH,

Corporate Author : ARMY ELECTRONICS RESEARCH AND DEVELOPMENT ACTIVITY WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Olsen,Wendell D. ; Leinbach,Henry J.

Report Date : FEB 1964

Pagination or Media Count : 61

Abstract : An experiment was conducted to determine the characteristics of two-way sound propagation over a six-mile geodetic line and the applicability of the measurements obtained to acoustic determination of mean temperatures over a long path. This experiment was performed in three phases over desert terrain at White Sands Missile Range during the months of February, May, and July of 1963. The acoustic source generator employed in this experiment consisted of a salute cannon firing 10-gauge blank shotgun shells for phases 1 and 2 and a gas jet generator also firing 10-gauge shotgun shells for phase 3. Results of the experiment indicate the necessity of favorable meteorological conditions for successful measurement of the sound in both directions as is necessary for application to temperature determination; therefore, the method cannot be considered as a reliable day-to-day technique to employ for this purpose. (Author)

Descriptors :   (*ATMOSPHERIC TEMPERATURE, ACOUSTICS), (*SOUND TRANSMISSION, ATMOSPHERIC TEMPERATURE), MEASUREMENT, SOUND GENERATORS, METEOROLOGICAL PHENOMENA, WIND, GUIDED MISSILE RANGES, VELOCITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE