Seize Your Copy A Two-Dimensional Time Domain Near Zone To Far Zone Transformation Depicted By National Aeronautics And Space Administration Issued In Copy

time domain transformation useful for extrapolating three dimensional near zone finite difference time domain FDTD results to the far zone was presented, Here, the corresponding two dimensional transform is outlined, While the three dimensional transformation produced a physically observable far zone time domain field, this is not convenient to do directly in two dimensions, since a convolution would be required.
However, a representative two dimensional far zone time domain result can be obtained directly, This result can then be transformed to the frequency domain using a Fast Fourier Transform, corrected with a simple multiplicative factor, and used, for example, to calculate the complex wideband scattering width of a target.
If an actual time domain far zone result is required, it can be obtained by inverse Fourier transform of the final frequency domain result, Luebbers, Raymond J. and Ryan, Deirdre and Beggs, John H, and Kunz, Karl S. Unspecified Center NAGThe National Aeronautics and Space Administration NASA is an independent agency of the U, S. federal government responsible for the civil space program, aeronautics research, and space research, .