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- W1557038510 abstract "Abstract : In the last quarterly report the standard iterative approach was used to solve the integral equation for the surface current density on a perfectly conducting surface. The number of iterations necessary was established to be only one to obtain a good agreement (within 1 dB) between the iterative method and the standard moment method when the incidence angle was smaller than 60 degrees and the rms slope smaller than 0.4. While three dimensional surface scattering problem can be solved with this method, it was found to be time consuming. For this reason further study has been made to look for a more effective method by finding an optimum basis function to represent the unknown field. During the past quarter a spectral representation was used to represent the scattered field and the tangential boundary condition was used to determine the scattered field directly. Initial test was carried out for a two-dimensional surface scattering problem. It was found that an hour calculation on VAX 8700 using the standard moment method could be reduced to 3 minutes with the present technique. (jhd)" @default.
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- W1557038510 date "1989-08-15" @default.
- W1557038510 modified "2023-10-14" @default.
- W1557038510 title "Simulation of Rough Surface Scattering in Three-Dimensions" @default.
- W1557038510 doi "https://doi.org/10.21236/ada212102" @default.
- W1557038510 hasPublicationYear "1989" @default.
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