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CHAPTER PAGE 11 Introduction
Theory of Reverberation Intensity
15 other sections not shown
acoustics altitude angles amplitude aspect angle assumption attenuation coefficient average reverberation backward scattering coefficient beam aspect beration bottom reverberation calibration Chapter 12 computed conning tower curves db per kyd decibels decrease deep scattering layer degrees depth direct measurements echo intensity echo level echo-ranging effect energy equation Figure fluctuation formulas frequency Fresnel zone gear grazing angle horizontal hydrophone msec observed obtained ocean surface optical ping length plotted predicted projector pulse length Rayleigh distribution received reverberation records reflected sound refraction rever reverberation intensity reverberation levels reverberation peak reverberation records S-boat San Diego scattered sound scattering layer Section ship signal length sound beam specular reflection sphere submarine surface reverberation surface scattering surface vessel target strength target strength measurements theoretical thermocline tion trans transducer transmission anomaly transmission loss UCDWR USS Sand Lance values variation volume reverberation wave wavelength wind speeds