Zobrazeno 1 - 10
of 38
pro vyhledávání: '"John M. Ozard"'
Autor:
Michael J. Wilmut, John M. Ozard
Publikováno v:
The Journal of the Acoustical Society of America. 104:3351-3355
Detection performance is evaluated for two efficient algorithms that track sources moving linearly at constant speed and depth. One of the algorithms uniformly weights the contributions from each ambiguity surface along the tracks examined, and the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86bd8cfef729be7b39d413aab2677fb6
https://doi.org/10.1121/1.423917
https://doi.org/10.1121/1.423917
Autor:
Cedric A. Zala, John M. Ozard
Publikováno v:
Journal of Computational Acoustics. :223-243
Geoacoustic parameters were estimated for vertical array data from the matched-field inversion benchmark data sets. Separate inversions were performed for narrowband data at 25 Hz, 50 Hz and 75 Hz, using a matching function consisting of the incohere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c3a928cd44ed64d0c83b279e9bd8281
https://doi.org/10.1142/s0218396x98000168
https://doi.org/10.1142/s0218396x98000168
Publikováno v:
The Journal of the Acoustical Society of America. 103:374-379
Tracking techniques may be used to reduce the ambiguity of an acoustic source’s position in matched-field processing, particularly for low signal-to-noise ratios. An efficient tracking algorithm was recently described, in which the performance woul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33183ebce28ec700bc84daed42c1a4da
https://doi.org/10.1121/1.421118
https://doi.org/10.1121/1.421118
Publikováno v:
Journal of Computational Acoustics. :311-326
A tracking algorithm may be used to reduce the ambiguity of the positions of a moving underwater acoustic source. The objective of this paper is to evaluate two efficient target tracking algorithms suitable for use with Matched-Field Processing (MFP)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66690dae65a4dbba8ab14b7bd03737ba
https://doi.org/10.1142/s0218396x95000161
https://doi.org/10.1142/s0218396x95000161
Publikováno v:
The Journal of the Acoustical Society of America. 98:2726-2734
Correlated ambient noise at an array can severely impair the ability of matched‐field processing and conventional processing to detect and localize an acoustic source. When components of the correlated noise field are stationary, however, their eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a4c75088b16181b1ad74ea0338d0e3f
https://doi.org/10.1121/1.413238
https://doi.org/10.1121/1.413238
Publikováno v:
Journal of Computational Acoustics. :187-197
Results are presented for the Matched Field Processing (MFP) analysis of synthetic benchmark cases, performed by a comprehensive Acoustic Signal Processing (ASP) code used in a turnkey manner. The performance of the Generalized Bartlett Beamformer (G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef8a7c2e1917956634b5c3fe78855e28
https://doi.org/10.1142/s0218396x94000130
https://doi.org/10.1142/s0218396x94000130
Autor:
Paul H. Lim, John M. Ozard
Publikováno v:
The Journal of the Acoustical Society of America. 95:138-151
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73301da7c42233443ddd24edef16e4d6
https://doi.org/10.1121/1.408371
https://doi.org/10.1121/1.408371
Autor:
John M. Ozard, Paul H. Lim
Publikováno v:
The Journal of the Acoustical Society of America. 95:131-137
In a companion paper, the theory for the evaluation of the acoustic field of a moving source in range‐independent environments was developed [P. H. Lim and J. M. Ozard, J. Acoust. Soc. Am. 94, 131–137 (1993)]. In the present paper, the problem of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e79033d0df7c2a02c64b94eab63f3b9d
https://doi.org/10.1121/1.408370
https://doi.org/10.1121/1.408370
Autor:
Cedric A. Zala, John M. Ozard
Publikováno v:
The Journal of the Acoustical Society of America. 92:403-417
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab3144b3db9167aaf24e2a6bbf7fb8c1
https://doi.org/10.1121/1.404250
https://doi.org/10.1121/1.404250
Publikováno v:
The Journal of the Acoustical Society of America. 90:2658-2663
Associative feedforward neural networks with no hidden layers were applied to the problem of localizing a source in range and depth using the acoustic signal arriving at a vertical array of sensors. A highly processed form of the signal (excitations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ccd4f131e3e0570d69d3af813488641
https://doi.org/10.1121/1.401860
https://doi.org/10.1121/1.401860