The Effect of Turbulent Intermittency on Detection in Acoustic Shadows.
Abstract
This report discusses the effect of turbulent intermittency (the tendency of turbulence to occur in bursts or activity) on large angle acoustic scattering and source detection and shows how intermittency increases the occurrence of high intensity scattering events. Source detection probabilities strongly depend on the occurrence of these events, as well as the noise background characteristics. Detection probability calculations are made for a variety of noise scenarios. Intermittency increases the detection probabilities by several orders of magnitude if the signal-to-noise ratio (SNR) is low and the noise background has relatively little variance. The intermittency effect becomes less significant in high SNR situations and highly variable noise environments. This report also discusses estimation of the parameters required by the intermittency theory from standard micrometeorological measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1996
- Accession Number
- ADA310700
Entities
People
- D. K. Wilson
Organizations
- United States Army Research Laboratory