Performance stability of high‐resolution matched‐field processors to sound‐speed mismatch in a shallow‐water environment

1993 ◽  
Vol 93 (5) ◽  
pp. 2617-2626 ◽  
Author(s):  
G. B. Smith ◽  
H. A. Chandler ◽  
C. Feuillade
Keyword(s):  
High Resolution ◽  
Shallow Water ◽  
Sound Speed ◽  
Water Environment ◽  
Shallow Water Environment

Influences Analysis of Environmental Parameters on Sound Propagation in Shallow Water

2014 ◽  
Vol 556-562 ◽  
pp. 4815-4819
Author(s):  
Shahabuddin Shaikh ◽  
Yi Wang Huang
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Sound Propagation ◽  
Transmission Loss ◽  
Water Environment ◽  
Environmental Parameters ◽  
Sea Surface ◽  
Water Medium ◽  
Sea Bottom ◽  
Shallow Water Environment

The objectives of this paper are to analyze the effectiveness of parameters on sound propagation in a shallow-water environment. The procedure for calculation of transmission loss is only the method to analyze the influence of environmental parameters. The normal mode approach is carried out for the calculation of transmission loss. And it is conducted in the range independent environment Transmission loss for sound propagation in shallow water depends upon many natural variables such as sea surface, water medium, and sea bottom. Analyses are finalized on the results obtained by considering two types of sound channels. The results indicated that acoustic transmission loss in a shallow-water environment is dependent on the source & receiver depths, sea surface, sound speed profile (SSP) in water, sound speed in bottom, density of water & bottom, propagation range and frequency. It is necessary to mention that better transmission was found during the sound velocity increases with depth; whereas the poor transmission occurred in negative gradient channel.

Hawaii Experimental Acoustics Range for Shallow Water Applications

2011 ◽  
Vol 45 (3) ◽  
pp. 69-76 ◽  
Author(s):  
Tom Fedenczuk ◽  
Eva-Marie Nosal
Keyword(s):  
Shallow Water ◽  
Water Environment ◽  
Shallow Water Acoustics ◽  
Central Node ◽  
Long Baseline ◽  
Wide Range ◽  
Shallow Water Environment ◽  
Near Shore ◽  
Monitoring And Surveillance ◽  
Passive Acoustic

AbstractShallow water acoustics provide a means for monitoring and surveillance of near-shore environments. This paper describes the current and future capabilities of the low- to high-frequency Hawaii Experimental Acoustics Range (HEAR) that was designed to facilitate a wide range of different shallow water acoustics experiments and allow researchers from various institutions to test various array components and configurations. HEAR is a portable facility that consists of multiple hydrophones (12‐16) cabled independently to a common central node. The design allows for variable array configurations and deployments in three modes: experimental (off boats and piers), autonomous, and cabled. An application of HEAR is illustrated by the results from a deployment at Makai Research Pier, Oahu, Hawaii. In this deployment, HEAR was configured as a long-baseline range of two volumetric subarrays to study passive acoustic tracking capabilities in a shallow water environment.

Sign in / Sign up

Export Citation Format

Share Document