NOTE: This item is not available outside the Texas A&M University network. Texas A&M affiliated users who are off campus can access the item through NetID and password authentication or by using TAMU VPN. Non-affiliated individuals should request a copy through their local library's interlibrary loan service.
Volumetric effects in the depolarization of electromagnetic waves scattered from rough surfaces
dc.contributor.advisor | Rouse, J., Jr. | |
dc.creator | Blanchard, Andrew James | |
dc.date.accessioned | 2020-08-21T21:31:31Z | |
dc.date.available | 2020-08-21T21:31:31Z | |
dc.date.issued | 1977 | |
dc.identifier.uri | https://hdl.handle.net/1969.1/DISSERTATIONS-356401 | |
dc.description | Vita. | en |
dc.description.abstract | Theoretical investigations of electromagnetic scatter from rough interfaces have been of interest for many years. Of particular interest is the depolarization of electromagnetic waves scattered from rough surfaces. Early works treated depolarization as a surface effect. These approaches have met with limited success. Recent theoretical and experimental investigations have shown that subsurface interaction may be responsible for the depolarization phenomena. The report establishes, by deductive reasoning, the depolarization mechanism as a multiple scattering phenomena within the volume. A detailed discussion of significant surface scattering theories is included. The report also includes the development of a new backscatter theory, with an analysis of this model behavior as a function of scene parameters. Polarized and depolarized microwave measurements were performed and compared to model predictions. The microwave measurements of the rough surfaces showed the existence of a subsurface depolarization mechanism. The theoretical model accounts for the general trends in the data including the response of the like and cross polarized cross section as a function of subsurface contribution and incident angle. Recommendations for future experimental programs designed specifically to more clearly characterize the depolarization phenomena and the effect of the volumetric contributions have also been identified. | en |
dc.format.extent | xv, 192 leaves | en |
dc.format.medium | electronic | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
dc.subject | Electromagnetic waves | en |
dc.subject | Scattering | en |
dc.subject | Mathematical models | en |
dc.subject | Microwave measurements | en |
dc.subject | Major electrical engineering | en |
dc.subject.classification | 1977 Dissertation B639 | |
dc.subject.lcsh | Electromagnetic waves | en |
dc.subject.lcsh | Scattering | en |
dc.subject.lcsh | Mathematical models | en |
dc.subject.lcsh | Microwave measurements | en |
dc.title | Volumetric effects in the depolarization of electromagnetic waves scattered from rough surfaces | en |
dc.type | Thesis | en |
thesis.degree.grantor | Texas A&M University | en |
thesis.degree.name | Doctor of Philosophy | en |
dc.type.genre | dissertations | en |
dc.type.material | text | en |
dc.format.digitalOrigin | reformatted digital | en |
dc.publisher.digital | Texas A&M University. Libraries | |
dc.identifier.oclc | 3265024 |
Files in this item
This item appears in the following Collection(s)
-
Digitized Theses and Dissertations (1922–2004)
Texas A&M University Theses and Dissertations (1922–2004)
Request Open Access
This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access. This will allow all visitors to view the contents of the thesis.