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Scattering from thin dielectric disks
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Levine, D. M. Lang, R. H. Carter, H. G. Schneider, A. |
| Copyright Year | 1984 |
| Description | A solution was obtained for scattering from thin dielectric disks by approximating the currents induced inside the disk with the currents which would exist inside a dielectric slab of the same thickness, orientation and dielectric properties. This approximation reduces to an electrostatic approximation when the disk thickness, T, is small compared to the wavelength of the incident radiation and the approximation yields a conventional physical optics solution when the dimension, A, characteristic of the geometrical cross section of the disk (e.g., the diameter of a circular disk) is large compared to wavelength. When the ratio A/T is sufficiently large the disk will always be in one or the other of these regimes (T lambda or kA1. Consequently, when A/T is large this solution provides a conventional approximation for the scattered fields which can be applied at all frequencies. As a check on this conclusion, a comparison was made between the theoretical and measured radar cross section of thin dielectric disks. Agreement was found for thin disks with both large and small values of kA. |
| File Size | 630059 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850006789 |
| Archival Resource Key | ark:/13960/t16m83374 |
| Language | English |
| Publisher Date | 1984-09-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Approximation Wavelengths Disks Shapes Electromagnetic Scattering Thin Bodies Mathematical Models Dielectrics Polarization Waves Electromagnetic Fields Electric Fields Maxwell Equation Electrostatics 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 |
