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Single mode excitation, attenuation and backscatter in shallow water

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Abstract
Normal mode theory is used to illustrate that a vertical array of weighted sources driven in an
 
appropriate frequency band can be used to minimize the combined effects of attenuation and bottomgenerated backscatter in shallow water. Results are presented for three canonical geoacoustic
 
models using both a winter and summer sound speed profile. It is shown that through selective
 
excitation of only mode 1 there exists an optimum frequency band providing both minimum attenuation and minimum bottom-generated backscatter. The results indicate that the center frequency of the optimum band increases as the critical angle decreases.
 

URI
http://hdl.handle.net/20.500.12489/306

Report Number
SR-236

Collections
  • Technical Reports

Date
1995/10

Author(s)
Gingras, Donald F.

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SR-236-UU.pdf (3.429Mb)

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