Analysis and Publication of Long-Range Low-Frequency Acoustic Results from the Pacific Ocean
Abstract
The primary goal of this project was to analyze and publish results of long-range low frequency acoustic experiments conducted in the Pacific Ocean. These experiments addressed the ultimate limitations to the performance of long-range sonar systems due to ocean sound speed perturbations and the characteristics of the ambient acoustic noise field. Scattering and diffraction resulting from internal waves and other ocean processes limit the temporal and spatial coherence of the received signal, while the ambient noise field is in direct competition with the received signal. Research conducted in the North Pacific Acoustic Laboratory (NPAL) and Deep Water Acoustic programs at the Applied Physics Laboratory (APLUW) were directed toward a complete understanding of the basic physics of low frequency, long-range, deep water, broadband acoustic propagation, the effects of ocean variability on signal coherence, and the fundamental limits to signal processing that are imposed by ocean processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 08, 2022
- Accession Number
- AD1187279
Entities
People
- James A. Mercer
Organizations
- University of Washington