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2. Physical quantities in passive DSM and sonar equation
2.1 Non-acoustic detection and its limitations
Acoustics are currently used for almost all DSMs. This operational dominance of sonar is a consequence of the many physical properties of ocean water, as described in detail at
Here is a brief, non-exhaustive list of what non-acoustic detection (DNA) can passively do for...
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Physical quantities in passive DSM and sonar equation
Bibliography
General works on sonar
Websites
Online calculation of the α coefficient http://resource.npl.co.uk/acoustics/techguides/seaabsorptio n
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The Ultimate Scientific and Technical Reference