Journal article
On the sign of the adaptive passive fathometer impulse response
The Journal of the Acoustical Society of America, Vol.126(4), pp.1657-1658
2009
DOI: 10.1121/1.3206696
PMID: 19813779
Abstract
Harrison
[
J. Acoust. Soc. Am.
125
,
3511-3513
(
2009
)]
presented a mathematical explanation for a sign-inversion induced to the passive fathometer response by minimum variance distortionless response (MVDR) beamforming. Here a concise mathematical formulation is offered, which decomposes the cross-spectral density matrix into coherent and incoherent components and allows the matrix inversion to be obtained exactly by eigendecomposition. This shows that, in the region containing the bottom reflection, the MVDR fathometer response is identical to that obtained with conventional processing multiplied by a negative factor.
Details
- Title: Subtitle
- On the sign of the adaptive passive fathometer impulse response
- Creators
- James Traer - Scripps Institution of Oceanography, La Jolla, California 92093-0238Peter Gerstoft - Scripps Institution of Oceanography, La Jolla, California 92093-0238H Song - Scripps Institution of Oceanography, La Jolla, California 92093-0238William Hodgkiss - Scripps Institution of Oceanography, La Jolla, California 92093-0238
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.126(4), pp.1657-1658
- DOI
- 10.1121/1.3206696
- PMID
- 19813779
- NLM abbreviation
- J Acoust Soc Am
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Publisher
- American Institute of Physics
- Date published
- 2009
- Academic Unit
- Psychological and Brain Sciences; Iowa Neuroscience Institute
- Record Identifier
- 9984065472102771
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