Particle Velocity Profiles in Underwater Horns
نویسندگان
چکیده
منابع مشابه
Acoustic particle velocity horns.
The paper considers receiving acoustic horns designed for particle velocity amplification and suitable for use in vector sensing applications. Unlike conventional horns, designed for acoustic pressure amplification, acoustic velocity horns (AVHs) deliver significant velocity amplification even when the overall size of the horn is much less than an acoustic wavelength. An AVH requires an open-en...
متن کاملHorns as particle velocity amplifiers.
Preliminary measurements and numerical predictions reveal that simple, and relatively small, horns generate remarkable amplification of acoustic particle velocity. For example, below 2 kHz, a 2.5 cm conical horn has a uniform velocity amplification ratio (throat-to-mouth) factor of approximately 3, or, in terms of a decibel level, 9.5 dB. It is shown that the velocity amplification factor depen...
متن کاملDelay and Doppler spreads in underwater acoustic particle velocity channels.
Signal processing and communication in acoustic particle velocity channels using vector sensors are of interest in the underwater medium. Due to the presence of multiple propagation paths, a mobile receiver collects the signal with different delays and Doppler shifts. This introduces certain delay and Doppler spreads in particle velocity channels. In this paper, these channel spreads are charac...
متن کاملEstimation of Velocity in Underwater Wireless Channels
one of my best friends, who helped to get me through it all. iii ACKNOWLEDGEMENTS I want to thank my advisor, Prof. Alenka Zajic, for her support and dedication to my research. Without her continued interest in my development as a student and researcher, this thesis would not have been possible. I also want to thank my committee members for their instruction and contributions to the improvement...
متن کاملElliptical acoustic particle motion in underwater waveguides.
Elliptical particle motion, often encountered in acoustic fields containing interference between a source signal and its reflections, can be quantified by the degree of circularity, a vector quantity formulated from acoustic particle velocity, or vector intensity measurements. Acoustic analysis based on the degree of circularity is expected to find application in ocean waveguides as its spatial...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1971
ISSN: 0001-4966
DOI: 10.1121/1.1976126