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- W69406982 abstract "A practical inversion algorithm based on the Fourier relation between scattered field data and the scatterer is presented; this procedure attempts to go beyond the limitations of conventional diffraction tomographic techniques which are largely limited to scatterers that satisfy the first Born or the Rytov approximation. A distorted wave approximation is used and reconstructions based on this have been compared with (first) Born inverted images and those based on the Rytov approximation. The new procedure is evaluated using microwave scattered field data taken from sand filled cylinders with diameters of 15.24cm and 30.48cm using 10GHz radiation. The approach adopted, being Fourier based, lends itself to further improvement through the application of well known signal processing (spectral estimation) techniques. The latter can improve the resolution of the reconstructed data by interpolating and extrapolating the available Fourier data, which lie on semicicular arcs in the Fourier domain, through the minimization of a cost function which incorporates prior knowledge about the scatterer, such as its support." @default.
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- W69406982 date "1990-01-01" @default.
- W69406982 modified "2023-09-27" @default.
- W69406982 title "Image Estimation from Scattered Field Data (at 10 GHz) Using the Distorted Wave Born Approximation and Other Prior Knowledge" @default.
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- W69406982 doi "https://doi.org/10.1007/978-3-642-75298-8_40" @default.
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