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THE EFFECT OF IRREGULARITIES
MEASUREMENTS IN THE OCEAN AS
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acoustic field acoustical pressure Airy phase amplitude angle of incidence approximation arrivals assume asymptotic attenuation average bottom boundary calculated caustic Chap characteristic equation coherent constant correlation function corresponding cross correlation curves density dependence discrete spectrum dispersion effect eigenvalues energy experimental frequency gives group velocity half-space harmonic homogeneous horizontal hydrophone infinite inhomogeneities integral interface irregular layer m/sec matched filter mean-square measured medium mode-interference terms noise normal mode number of modes obtained oscillation Pekeris perfect waveguide phase velocity plane-wave problem propagation pulse range ray optics ray theory reflection coefficient rough surface scattered radiation sediment shallow water shallow-water shown in Fig sin2 SOFAR channel solid solution sound channel sound field sound velocity source and receiver stratified media tends to zero theoretical tion Tolstoy total reflection transmission turning point underwater acoustics values wave number waveguide wavelength yimh