Loading...
Please wait, while we are loading the content...
Similar Documents
A two-dimensional time domain near zone to far zone transformation (Document No: 19920010500)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Beggs, John H. Kunz, Karl S. Luebbers, Raymond J. Ryan, Deirdre |
| Copyright Year | 1991 |
| Description | In a previous paper, a time domain transformation useful for extrapolating 3-D near zone finite difference time domain (FDTD) results to the far zone was presented. In this paper, the corresponding 2-D transform is outlined. While the 3-D transformation produced a physically observable far zone time domain field, this is not convenient to do directly in 2-D, since a convolution would be required. However, a representative 2-D 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. |
| File Size | 511684 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920010500 |
| Archival Resource Key | ark:/13960/t1wd8s15p |
| Language | English |
| Publisher Date | 1991-07-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Domains Extrapolation Fourier Transformation Broadband Electromagnetic Scattering Finite Difference Theory Far Fields Frequency Response Time Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
