Accession Number:

ADA159672

Title:

Design and Testing of Hardware Improvements of an Acoustic Sounder.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1985-06-01

Pagination or Media Count:

52.0

Abstract:

The application of lasers in military communications and weapons systems accentuate the need for instruments capable of measuring the fine dynamic structure of the atmosphere. One of the most useful tools available for the probing of the atmosphere is the acoustic sounder. Commercial grade acoustic sounders, such as the Aeroviroment model number 300 cannot collect atmospheric data with the quality needed for laser propagation research. The usable range of the Aerovironment model 300 acoustic sounder is less than 500 meters. Many laser systems need atmospheric information at altitudes of 1 to 2 kilometers and higher. The objective of this thesis was to upgrade an existing acoustic sounder to increase the range and improve the quality of the receiver-processor. A serious deficiency of the Aeroviroment model number 300 is the poor coupling of the acoustic transducer to the feedhorn. This thesis involved a complete redesign and experimental test of the transducer feedhorn using two different horn styles as well as making the horn removable and easily changeable. Additional keywords Experimental data Charts Equations.

Subject Categories:

  • Atmospheric Physics
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE