Array Processing and Forward Modeling Methods for the Analysis of Stiffened, Fluid-loaded Cylindrical ShellsThis thesis investigates array processing and forward modeling methods for the analysis of experimental, structural acoustic data to understand wave propagation on fluid-loaded, elastic, cylindrical shells in the mid-frequency range, 2 |
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Results 1-3 of 60
Page 120
... problem of identifying those parameters which minimize the total mean square error between the model output and the focused dataset . This is equivalent to a function minimization problem . There are several practical issues that make ...
... problem of identifying those parameters which minimize the total mean square error between the model output and the focused dataset . This is equivalent to a function minimization problem . There are several practical issues that make ...
Page 122
... problem . Like any tool , it has its limitations . Each algorithm has problems some of which are unique to it and some of which are general to the method . I will outline some of the problems I encountered in solving the shell problem ...
... problem . Like any tool , it has its limitations . Each algorithm has problems some of which are unique to it and some of which are general to the method . I will outline some of the problems I encountered in solving the shell problem ...
Page 147
... problem of having large imbalances concentrated in a few boxes . Tracer concentrations are bounded by inequality constraints so there is no need for a data misfit term in the objective function . Formally , the optimization problem is ...
... problem of having large imbalances concentrated in a few boxes . Tracer concentrations are bounded by inequality constraints so there is no need for a data misfit term in the objective function . Formally , the optimization problem is ...
Contents
Introduction | 16 |
Array Processing | 24 |
Array Processing Results | 42 |
Copyright | |
5 other sections not shown
Common terms and phrases
813C values AABW acoustic array around shell array processing beamformer benthic bioturbation carbon carbon 13 chapter Complex shell compressional waves data misfit deconvolved deep ocean deep water density direct analysis Distance along shell DWBC Eastern Atlantic Empty shell end-member endcap firing in millisecs flexural waves flux focused onto shell foraminifera foraminifera shells forward modeling frequency geometrically scattered return glacial ocean Hamming tapered Ice Age Incident angle km depth Last Glacial Maximum latitude LGM simulation Lower NADW matrix millisecs Figure North Atlantic nutrient objective function ocean circulation paleo-data parameters physical constraints potential temperature priori estimate problem Radon Transform Raw data residuals resolution Ribbed shell salinity SAN DIEGO Sartheinsa194 Sartheinsal88 shell beam shell data shell in cm shown in Fig simulated annealing solution source firing source pulse Southern Ocean spatial thermal wind tracer concentrations tracer distribution transmission line model transports vertical water mass distribution wavespeed wavetype