Applications and Time-Domain Solution of Higher-Order Parabolic Equations in Underwater Acoustics
Abstract
A higher-order parabolic equation and the corresponding high-order time-domain parabolic equation are derived from a Pade series and solved numerically. These models provide accurate solutions for problems involving very-wide-angle propagation (e.g., propagation in the nearfield or over a hard ocean bottom); propagation in domains in which sound-speed variations are large (e.g., propagation in deep water, deep within the ocean bottom, in high-speed ocean bottoms, and possible of different wave types); and propagation out to very long ranges. The possibility of modeling elastic wave propagation with a similar approach is considered. Keywords: Reprints, Transients, Distributed sensors, Coherence, Detection, Classification.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1989
- Accession Number
- ADA226636
Entities
People
- Michael D. Collins
Organizations
- United States Naval Research Laboratory