A diagonal subspace-based optimization method for reconstruction of 2-d isotropic and uniaxial anisotropic dielectric objects
In this letter, a diagonal approximation has been introduced in the framework of subspace-based optimization method (SOM), for reducing computational complexity. Due to this approximation, the operator which relates the electric field and equivalent current becomes a diagonal one, instead of the nonlinear one in full-wave inversion. Consequently, the proposed method is named as diagonal SOM (DSOM). Compared with the original SOM, DSOM has a more simplified objective function with much less computational cost. DSOM can be applied for solving inverse scattering problems involving not only isotropic objects, but also uniaxial anisotropic objects, which is demonstrated by numerical examples. Furthermore, DSOM provides reconstruction results that are comparable in quality to the ones obtained using SOM, but with much less computation load.
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- Geological & Geomatics Engineering
- 4013 Geomatic engineering
- 3709 Physical geography and environmental geoscience
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- 0909 Geomatic Engineering
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Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Geological & Geomatics Engineering
- 4013 Geomatic engineering
- 3709 Physical geography and environmental geoscience
- 3704 Geoinformatics
- 0909 Geomatic Engineering
- 0906 Electrical and Electronic Engineering
- 0801 Artificial Intelligence and Image Processing