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- W1991500610 abstract "In the two-dimensional radar image reconstruction using diffraction tomography, missing data become a significant problem if the observation direction and the scan range are restricted. A method is proposed in which these missing data are interpolated in the wavenumber domain. As an object image, a collection of the point targets is assumed. By means of a method which minimizes repetitively the square residual of the observed values and the reconstructed image in the wavenumber space, it is shown by simulation that a good image reconstruction is possible even if the missing rate is as high as 50 percent.As a method to provide the initial value for the repetitive method, an interpolation method using the autocorrelation function is proposed. It is shown that this scheme works well in a stable manner even for a high missing rate and a poor SN ratio. Further, an objective discrimination criterion is proposed for estimation of the number of targets. It is shown that the true target can easily be discriminated if the SN is good and that a stable estimation is still possible even if the SN is poor and the extraction of a weak image is difficult." @default.
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- W1991500610 date "1994-07-01" @default.
- W1991500610 modified "2023-09-27" @default.
- W1991500610 title "Two-dimensional interpolation in the wavenumber domain for radar image reconstruction" @default.
- W1991500610 doi "https://doi.org/10.1002/ecja.4410770706" @default.
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