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- W73042874 abstract "Conventional Fourier transform method of angular spectrum propagation to estimate field distribution at planes distant from the measuring plane has several problems. These are wrap-around arror, replicated sources problem and side-lobe leakage effects due to windowing the data. These effects are inevitable as far as the discrete Fourier transform is concerned. One suggestion to eliminate these effects is to apply a parametric modelling approach to estimate the Fourier transform pair.We have found that the auto-regressive (AR) modelling approach has better resolution than the Fourier transform method when used to estimate source field distributions. The modelling method produces even better results when it is applied to the new Fresnel integral to get a direct spatial source property distribution, rather than using the angular spectrum propagation approach.KeywordsDiscrete Fourier TransformAngular SpectrumFrequency Domain ApproachSmall Angle ApproximationFresnel ApproximationThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W73042874 date "1987-01-01" @default.
- W73042874 modified "2023-09-23" @default.
- W73042874 title "Parametric Approach on Field Propagation" @default.
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- W73042874 doi "https://doi.org/10.1007/978-1-4684-5320-1_17" @default.
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