Underwater Acoustic SystemsAddresses the theory and practice of sound transmission in the sea and in its underlying sediment layers and rock strata. Presents the sonar equations and considers modeling of sonar propagation. Also describes transducer design, transducer arrays and applications. |
Contents
The Sonar Equations | 16 |
Characteristics and Analysis of Sonar Waveforms | 32 |
Ray Trace Modelling of Sonar Propagation | 52 |
Copyright | |
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Common terms and phrases
acoustic impedance acoustic intensity ambient noise amplifier amplitude angle of incidence applications array attenuation backscatter bandwidth bottom calculation cepstrum ceramic components computing correlation function decibels delay detonation dipole direction echo sounder effect elements energy engineering equalisation equation example exhibit filter Fourier Transform horizontal hydrophone IEEE illustrated in figure increase layer loss marine measured method metre MRayl multipath normal modes parametric path phase piezo-electric plane polar response pressure field pressure fluctuation problem projector propagation pulse R₁₂ range ratio Ray Tracing received signal referred reflection coefficient relatively resonance reverberation scattering sea-floor sea-surface sediment shown in figure sonar sound speed profile spatial spectral density surface synthetic aperture Synthetic Aperture Sonar target strength thermocline transducer transfer function transmission frequency transmit typically underwater acoustics utilise variability velocity vertical voltage wave waveform wavefront wavelength µPa