Theories of rough surface reflection by Rayleigh, Eckart, and Brekhovskikh are utilized to calculate the dependence, on surface and radiation parameters, of the amplitudes of reflected radiation when an acoustic beam is incident on a pressure‐release surface with sinusoidal corrugations. The results of these theories are compared, with emphasis on the assumptions used. Experimental results for the reflection of an underwater acoustic beam from this type of surface are presented and compared with each of the theories. The best agreement between theory and experiment is obtained for surfaces of small slope, indicating that this criterion is basic to the validity of the theories. However, surprisingly similar results are obtained for surfaces of large slope. The theories seem to predict the behavior of the lower orders of reflection more closely than that of the higher orders. Good agreement between theory and experiment is obtained for directions of reflection and for cut‐off frequencies.
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February 1956
Research Article|
February 01 1956
Underwater Sound Reflection from a Corrugated Surface
E. O. LaCasce, Jr.;
E. O. LaCasce, Jr.
Brown University, Providence, Rhode Island
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P. Tamarkin
P. Tamarkin
Brown University, Providence, Rhode Island
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E. O. LaCasce, Jr.
P. Tamarkin
Brown University, Providence, Rhode Island
J. Appl. Phys. 27, 138–148 (1956)
Article history
Received:
July 14 1955
Citation
E. O. LaCasce, P. Tamarkin; Underwater Sound Reflection from a Corrugated Surface. J. Appl. Phys. 1 February 1956; 27 (2): 138–148. https://doi.org/10.1063/1.1722323
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