Titlebook: Underwater Acoustics and Signal Processing; Proceedings of the N Leif Bjørnø Conference proceedings 1981 D. Reidel Publishing Company, Dord

幻想

恭维

Underwater Explosives: Scaling of Source SpectraUnderwater explosives are a popular source of acoustic energy because of their ease of deployment, broad bandwidth, high power and low cost. A significant disadvantage of using explosives is the difficulty in obtaining accurate source calibration, largely due to the sensitivity at low frequencies of the source spectrum to detonation depth.

微尘

The Remote Sensing of Factors Influencing Underwater AcousticsThe marine factors influencing sound propagation in sea water are listed and their remote sensing is concisely reviewed in the light of presently available instrumentation, processing, and oceanographic modelling.

APEX

Deterministic Propagation Modelling I: Fundamental PrinciplesThe physics of sound propagation in the ocean is briefly reviewed. The wave equation is presented and a set of solutions under a variety of approximations are discussed. The consistency among these solutions is illustrated.

简略

Deterministic Propagation Modelling II: Numerical ResultsThe most commonly used propagation models are presented and their areas of applicability are indicated. Furthermore, the use of these models for gaining insight into the physical mechanisms governing sound propagation in the ocean is illustrated through a sequence of modelling examples.

母猪

Stochastic Propagation ModellingSome remarks on modelling stochastic oceanic quantities in acoustic propagation models will be given first. Then the most commonly used propagation models will roughly be outlined and some examples will be given.

RAFF

Ambient Noise Generation in Pack IceThe deformation of pack ice represents the release of significant mechanical energy. Some of this is coupled into acoustical signals which propagate in the ocean. The nature of the acoustical noise field depends on the nature of the deformation and the mechanical properties of the ice.

Corporeal

Propagation of Sound in Marine SedimentsThe Biot theory for the propagation of sound in marine sediments is reviewed and discussed. An important feature of this theory is that it allows for the movement of the fluid relative to the solid medium resulting in a small velocity dispersion and a viscous contribution to the attenuation.

背叛者

河潭

https://doi.org/10.1007/978-94-009-8447-9Ocean; Phase; Sea ice; acoustics; algorithm; detection; digital signal processing; filtering; image processi