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Autor:
Robert L. Erath, Arthur A. Crews
Publikováno v:
The Journal of the Acoustical Society of America. 40:1556-1557
Directional reflectors for use with commercial omnidirectional underwater acoustic transducers are described herein. The reflectors are easy to construct, inexpensive, and exhibit none of the ringing characteristics found so frequently with metallic
Autor:
Arthur A. Crews, Robert L. Erath
Publikováno v:
The Journal of the Acoustical Society of America. 34:1992-1992
This paper presents some recent results of experiments conducted to investigate nonspecular acoustic echoes from the edges of underwater objects. When energy is incident at the critical angle, it has been found that ordinary refraction theory can be