An adaptive-hybrid algorithm for geoacoustic inversion

被引:124
作者
Dosso, SE [1 ]
Wilmut, MJ [1 ]
Lapinski, ALS [1 ]
机构
[1] Univ Victoria, Sch Earth & Ocean Sci, Victoria, BC V8W 3P6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
geoacoustic inversion; hybrid inversion; matched-field methods;
D O I
10.1109/48.946507
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper presents an adaptive hybrid algorithm to invert ocean acoustic field measurements for seabed geoacoustic parameters. The inversion combines a global search (simulated annealing) and a local method (downhill simplex), employing an adaptive approach to control the trade off between random variation and gradient-based information in the inversion. The result is an efficient and effective algorithm that successfully navigates challenging parameter spaces including large numbers of local minima, strongly correlated parameters, and a wide range of parameter sensitivities. The algorithm is applied to a set of benchmark test cases, which includes inversion of simulated measurements with and without noise, and cases where the model parameterization is known and where the parameterization must be determined as part of the inversion. For accurate data, the adaptive inversion often produces a model with a Bartlett mismatch lower than the numerical error of the propagation model used to compute the replica fields. For noisy synthetic data, the inversion produces a model with a mismatch that is lower than that for the true parameters. Comparison with previous inversions indicates that the adaptive hybrid method provides the best results to date for the benchmark cases.
引用
收藏
页码:324 / 336
页数:13
相关论文
共 41 条
[1]  
[Anonymous], 1992, SMR
[2]   EFFICIENT NAVIGATION OF PARAMETER LANDSCAPES [J].
COLLINS, MD ;
FISHMAN, L .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1995, 98 (03) :1637-1644
[3]   NONLINEAR INVERSION FOR OCEAN-BOTTOM PROPERTIES [J].
COLLINS, MD ;
KUPERMAN, WA ;
SCHMIDT, H .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1992, 92 (05) :2770-2783
[4]   OCCAMS INVERSION - A PRACTICAL ALGORITHM FOR GENERATING SMOOTH MODELS FROM ELECTROMAGNETIC SOUNDING DATA [J].
CONSTABLE, SC ;
PARKER, RL ;
CONSTABLE, CG .
GEOPHYSICS, 1987, 52 (03) :289-300
[5]   LINEAR AND NON-LINEAR APPRAISAL USING EXTREMAL MODELS OF BOUNDED VARIATION [J].
DOSSO, SE ;
OLDENBURG, DW .
GEOPHYSICAL JOURNAL INTERNATIONAL, 1989, 99 (03) :483-495
[6]   ESTIMATION OF OCEAN-BOTTOM PROPERTIES BY MATCHED-FIELD INVERSION OF ACOUSTIC FIELD DATA [J].
DOSSO, SE ;
YEREMY, ML ;
OZARD, JM ;
CHAPMAN, NR .
IEEE JOURNAL OF OCEANIC ENGINEERING, 1993, 18 (03) :232-239
[7]  
DOSSO SE, 2000, P 5 EUR C UND AC LYO, P185
[8]  
EADIE WT, 1971, STAT METHODS EXPT PH, pCH9
[9]   Geoacoustic inversion via local, global, and hybrid algorithms [J].
Fallat, MR ;
Dosso, SE .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1999, 105 (06) :3219-3230
[10]   Geoacoustic inversion for the Workshop '97 benchmark test cases using simulated annealing [J].
Fallat, MR ;
Dosso, SE .
JOURNAL OF COMPUTATIONAL ACOUSTICS, 1998, 6 (1-2) :29-43