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Ultrawideband pulse penetration in a debye medium with static conductivity
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cartwright, Natalie A. Oughstun, Kurt Edmund |
| Copyright Year | 2007 |
| Abstract | The high frequency, low power characteristics of ultra-wideband/short-pulse signals exhibit uniquely promising features with applications to remote sensing of terrestrial objects from satellites, foliage-penetrating radar, as well as the study of biological tissue exposed to ultrawideband pulses. Indeed, previous studies of ultrawideband electromagnetic pulse propagation through dispersive, nonconducting media has shown the existence of a so-called Bril-louin precursor whose peak amplitude only decays algebraically with propagation distance. However, materials such as the ionosphere, foliage and biological tissue exhibit conductivity. In this paper, we show that a Debyemodel material with static conductivity does indeed support a Brillouin precursor, but that this precursor now attenuates exponentially with propagation distance and not just algebraically. Nevertheless, we show that it is still advantageous to track the Brillouin precursor in remote sensing applications because its attenuation is less than the attenuation of the main signal. |
| Starting Page | 159 |
| Ending Page | 163 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://apps.dtic.mil/dtic/tr/fulltext/u2/a474484.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
