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amrcg
Joined: 02 Jan 2004
Posts: 39
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 Posted: Wed Dec 15, 2004 2:44 pm Post subject: Underwater accoustics, passive detection, DEMON |
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Dear all
Is there any available Web resources about the physics of noise produced by ships, as well as how passive detection and classification is accomplished:
- What are the maths behind noise spectrum analysis, which "analysis bandwiths" are usually used/required for proper classification, etc.?
- How does the propeller/shaft rotation affect the spectum of the signal, what are the maths behing DEMON analysis?
If someone has unclassified documentation in electronic format, could you please send it to me?
Note: I'm looking for detailed material.
Best regards,
Antonio |
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sonar732
Joined: 03 Jul 2003
Posts: 1358
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| Posted: Wed Dec 15, 2004 5:59 pm Post subject: Re: Underwater accoustics, passive detection, DEMON |
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| amrcg wrote: | Dear all
Is there any available Web resources about the physics of noise produced by ships, as well as how passive detection and classification is accomplished:
- What are the maths behind noise spectrum analysis, which "analysis bandwiths" are usually used/required for proper classification, etc.?
- How does the propeller/shaft rotation affect the spectum of the signal, what are the maths behing DEMON analysis?
If someone has unclassified documentation in electronic format, could you please send it to me?
Note: I'm looking for detailed material.
Best regards,
Antonio |
Check this link...
http://www.ldeo.columbia.edu/res/pi/MB-System/mb-cookbook/ch02s04.html |
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Bill Nichols
Joined: 14 Mar 2001
Posts: 2657
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