Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Cedric A. Zala"'
Autor:
Cedric A. Zala, I. Barrodale
Publikováno v:
Advances in Computational Mathematics. 11:211-227
Using an image rectification application arising in the field of forest management, we demonstrate in this paper the practical feasibility of applying thin plate spline (TPS) techniques to real image warping problems. The use of TPS‐based warping i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d927e64a2237fc8b0688de2e57a50d8
https://doi.org/10.1023/a:1018928026708
https://doi.org/10.1023/a:1018928026708
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:
The Journal of the Acoustical Society of America. 101:760-766
In this article, stable Pade approximations to the function 1+z are derived by choosing a branch cut in the negative half-plane. The Pade coefficients are complex and may be derived analytically to arbitrary order from the corresponding real coeffici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65509d6a884ef9f3a6e488b1e34b210a
https://doi.org/10.1121/1.418038
https://doi.org/10.1121/1.418038
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
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
Autor:
John M. Ozard, Cedric A. Zala
Publikováno v:
The Journal of the Acoustical Society of America. 88:1011-1019
Matched‐field processing (MFP) is being considered increasingly for three‐dimensional (3‐D) localization of an acoustic source in a noisy ocean environment. MFP consists of comparing the measured acoustic field to the full field computed using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::869aadd4977ee1f87176328ff80e28d8
https://doi.org/10.1121/1.399851
https://doi.org/10.1121/1.399851
Autor:
John M. Ozard, Cedric A. Zala
Publikováno v:
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing.
A technique is developed for range-dependent matched field processing (MFP) where the field is computed using a parabolic equation (PE) approximation to the acoustic wave equation. The two-dimensional PE field is computed at each sensor in the array
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4161f7de74aec5b6512e6e352f335992
https://doi.org/10.1109/pacrim.1989.48427
https://doi.org/10.1109/pacrim.1989.48427
Autor:
Kenneth I. McRae, Cedric A. Zala
Publikováno v:
Review of Progress in Quantitative Nondestructive Evaluation ISBN: 9781461358190
Much of the significant damage that may be incurred by graphite-epoxy composite materials results in relatively large discrete damage sites such as delaminations. In those instances, the damage is easily and reliably detected using conventional ultra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6e5d7804b1fb1b5adfed8639e60b52b
https://doi.org/10.1007/978-1-4615-1987-4_87
https://doi.org/10.1007/978-1-4615-1987-4_87
Autor:
Kenneth I. McRae, Cedric A. Zala
Publikováno v:
Review of Progress in Quantitative Nondestructive Evaluation ISBN: 9781461362333
The increased use of composite materials and adhesively bonded joints has resulted in the need for the development of inspection techniques appropriate for multi-layered structures. Normal incidence ultrasonic pulse-echo imaging has been and continue
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4b4377f589443b6a83d120f71fb4880
https://doi.org/10.1007/978-1-4615-2848-7_105
https://doi.org/10.1007/978-1-4615-2848-7_105