Basis mapping methods for forward and inverse problems
Basis mapping methods for forward and inverse problems
复制标题
正向和逆向问题的基映射方法
DOI:
10.1002/nme.5271
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发表时间:
2016
影响因子:
2.9
通讯作者:
Schweiger M
中科院分区:
文献类型:
--
作者:
Schweiger M
This paper describes a novel method for mapping between basis representation of a field variable over a domain in the context of numerical modelling and inverse problems. In the numerical solution of inverse problems, a continuous scalar or vector field over a domain may be represented in different finite‐dimensional basis approximations, such as an unstructured mesh basis for the numerical solution of the forward problem, and a regular grid basis for the representation of the solution of the inverse problem. Mapping between the basis representations is generally lossy, and the objective of the mapping procedure is to minimise the errors incurred. We present in this paper a novel mapping mechanism that is based on a minimisation of theL2orH1norm of the difference between the two basis representations. We provide examples of mapping in 2D and 3D problems, between an unstructured mesh basis representative of an FEM approximation, and different types of structured basis including piecewise constant and linear pixel basis, and blob basis as a representation of the inverse basis. A comparison with results from a simple sampling‐based mapping algorithm shows the superior performance of the method proposed here. © 2016 The Authors. International Journal for Numerical Methods in Engineering Published by John Wiley & Sons Ltd.
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影响因子:
--
作者:
Haijiang Zhang;C. Thurber
通讯作者:
Haijiang Zhang;C. Thurber
影响因子:
4.6
作者:
P. Schimpf;Hesheng Liu;C. Ramon;J. Haueisen
通讯作者:
J. Haueisen
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
Z. Wang;A. Przekwas;Yen Liu
通讯作者:
Yen Liu
DOI:
10.1364/josaa.7.001834
发表时间:
1990-10-01
影响因子:
1.9
作者:
LEWITT, RM
通讯作者:
LEWITT, RM