Abstract
Variation of ocean environmental parameters is important to sound ray propagation. This article studies the problem of sound ray propagation in seawater by BELLHOP ray model. The sensitivities of sound ray propagation to the variations of seabed topography and depth of sound source by simulation. The results show that the depth variation of sound source is the main cause for emerging and disappearing of surface sound channel, accumulation area and deep sound channel. The deviation of sound ray propagation is in accordance with seabed topography change.
Highlights
When propagating in seawater, sound ray may be affected by environmental factors such as sea surface and submarine boundary
The results show that the depth variation of sound source is the main cause for emerging and disappearing of surface sound channel, accumulation area and deep sound channel
To simulation study the difference of sound channel in different condition frames; it is emulational calculated the difference of sound channel by BELLHOP radial model
Summary
Sound ray may be affected by environmental factors such as sea surface and submarine boundary. The study of sound ray propagation in seawater is mainly ray theory. Sound wave propagation in seawater is looked up as sound ray propagation in medium in the context of high frequency. The change of sound intensity, the time and distance of sound ray propagation in space are mainly studied. Ray acoustics is an approximate method, which is only for the sound wave of high frequency. Modeling and Simulating of sound wave propagation is important to sonar’s using and optimum designing in water. There are already some simulating study reports on sea sound propagation effect and characteristic of sound channel under perfect environment [2,3]
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