Wideband processing and analysis of lightning in the earth-ionosphere waveguide
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2005
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/16973 |
| _version_ | 1811082774898016256 |
|---|---|
| author | Lowenfels, David F., 1979- |
| author2 | Earle R. Williams. |
| author_facet | Earle R. Williams. Lowenfels, David F., 1979- |
| author_sort | Lowenfels, David F., 1979- |
| collection | MIT |
| description | Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002. |
| first_indexed | 2024-09-23T12:08:47Z |
| format | Thesis |
| id | mit-1721.1/16973 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T12:08:47Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/169732019-04-12T07:19:59Z Wideband processing and analysis of lightning in the earth-ionosphere waveguide Wideband signal processing and analysis of lightning in the earth-ionosphere waveguide Lowenfels, David F., 1979- Earle R. Williams. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Electrical Engineering and Computer Science. Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002. Includes bibliographical references (p. 70-72). This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. A new vertical electric field antenna has been installed at our West Greenwich, RI Schumann resonance field station, coupled to a high-bandwidth charge amp and a computerized sampling system. Techniques are given for the processing of lightning transients. Digital signal processing techniques for the removal of power line harmonic noise are presented and evaluated. Additionally, a wideband (3 Hz - 24 kHz) simulation model has been developed. This model gives evidence that slow tail waveforms are generated primarily due to the variation of waveguide phase velocity with frequency and the depletion of spectral energy in the waveguide cutoff region. Preliminary formulas for distance estimation have been developed from the simulations, based on slow tail separation time and spectral ratios. These methods are evaluated for consistency against real events. by David F. Lowenfels. M.Eng. 2005-05-19T15:30:03Z 2005-05-19T15:30:03Z 2002 2002 Thesis http://hdl.handle.net/1721.1/16973 53712465 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 155 p. 5177182 bytes 5176694 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Electrical Engineering and Computer Science. Lowenfels, David F., 1979- Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title | Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title_full | Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title_fullStr | Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title_full_unstemmed | Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title_short | Wideband processing and analysis of lightning in the earth-ionosphere waveguide |
| title_sort | wideband processing and analysis of lightning in the earth ionosphere waveguide |
| topic | Electrical Engineering and Computer Science. |
| url | http://hdl.handle.net/1721.1/16973 |
| work_keys_str_mv | AT lowenfelsdavidf1979 widebandprocessingandanalysisoflightningintheearthionospherewaveguide AT lowenfelsdavidf1979 widebandsignalprocessingandanalysisoflightningintheearthionospherewaveguide |