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dc.contributor.advisorJenn, David
dc.contributor.authorLim, Teck Yong
dc.date.accessioned2012-03-14T17:48:00Z
dc.date.available2012-03-14T17:48:00Z
dc.date.issued2003-12
dc.descriptionApproved for public release, distribution is unlimiteden_US
dc.description.abstractSubsurface radar, also known as ground-penetrating radar, is increasingly being used for the detection and location of buried objects such as mines and structures that are found within the upper regions of the earth's surface. The thesis gives a review of the work done to date in this area, laying emphasis on the possible antenna designs to match the range of intended applications. An overall design strategy is outlined, together with a more detailed treatment of the ground-penetrating radar subsystems and topics which are relevant to effective subsurface radar operation. These include the dielectric properties of earth materials, the choice of frequency of operation, as well as the design and construction of suitable antennas. Finally, a new antenna structure called the counter-wound spiral antenna, which is suitable for subsurface radar applications, is examined. The counter-wound spiral antenna has a broad bandwidth and a linear polarization with a controllable plane of polarization from a planar geometry. It has an electronically steerable plane of polarization. This unique property offers a reduction in antenna polarization loss and allows the extraction of maximum information from the target scattered echo.en_US
dc.description.urihttp://archive.org/details/broadbandcounter109456176
dc.format.extentxvi, 77 p. : ill. (chiefly col.) ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.subject.lcshGround penetrating radaren_US
dc.subject.lcshSpiral antennasen_US
dc.subject.lcshBroadband counter-wound spiral antenna for subsurface radar applicationsen_US
dc.titleBroadband counterwound spiral antenna for subsurface radar applicationsen_US
dc.typeThesisen_US
dc.contributor.secondreaderKnorr, Jeffrey B.
dc.contributor.departmentEngineering Science
dc.description.serviceDSO National Laboratories author (civilian).en_US
etd.thesisdegree.nameM.S. in Engineering Science (Electrical Engineering)en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineEngineering Science (Electrical Engineering)en_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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