Beam spreading and loss of spatial coherence in an inhomogeneous and fluctuating ocean

dc.contributor.author	McCoy, John J.
dc.date.accessioned	2018-10-11T14:04:39Z
dc.date.available	2018-10-11T14:04:39Z
dc.date.issued	1975/10
dc.identifier	329
dc.identifier.govdoc	CP-17/6
dc.identifier.uri	http://hdl.handle.net/20.500.12489/13
dc.description.abstract	A theory has been developed that enables estimates to be made of beam bending, beam spreading and loss of spatial coherence. In this paper we concentrate on the loss of spatial coherence due to scattering. Using a minus two power law as representative of horizontal tow data the solution predicts that the law of coherence of a signal received by a horizontally positioned line array behaves as I exp(-Ek5/2 ZS 3/2 ). Here I is the signal intensity, E is an environmental parameter, k is the signal wave number, Z is the range and S is the separation distance between receiver hydrophones.
dc.format	10 p. : ill. ; digital, PDF file
dc.language	English
dc.publisher	NATO. SACLANTCEN
dc.source	In: Ocean Acoustic Modelling (SACLANTCEN Conference Proceedings CP-17), Part 6, 1975, pp. 31-1 - 31-10.
dc.subject	Acoustic propagation
dc.subject	Transmission loss
dc.subject	Acoustic scattering
dc.subject	Acoustic models
dc.subject	Low frequency acoustics
dc.subject	Ocean acoustics
dc.subject	Underwater acoustics
dc.title	Beam spreading and loss of spatial coherence in an inhomogeneous and fluctuating ocean
dc.type	Papers and Articles
dc.type	Conference Proceedings (CP)

Related items