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dc.contributor.advisorAdler, R.W.
dc.contributor.authorCrawford, James B.
dc.dateSeptember 1987
dc.date.accessioned2012-11-27T00:23:34Z
dc.date.available2012-11-27T00:23:34Z
dc.date.issued1987-09
dc.identifier.urihttp://hdl.handle.net/10945/22399
dc.description.abstractMaking an aircraft available and modifying it to test various antenna systems and configurations is extremely costly. The computer model is an excellent alternative means of analyzing antenna systems for optimum communication system performance. In this study electromagnetic wire grid computer models of two helicopters and eight HF antenna configurations are developed using Interactive Graphics Utility for Automated NEC Analysis (IGUANA). Numerical Electromagnetics Code (NEC) is used to obtain radiation patterns, and the Advanced Prophet program is used to develop the criteria for judging system effectiveness. These computer results compare favorably with test range data, showing great savings of cost. They provide the additional advantage of showing radiation patterns at an elevated angle for sky wave propagation analysis (patterns which cannot be obtained on an antenna test range).en_US
dc.description.urihttp://archive.org/details/optimizinghfnten1094522399
dc.format.extent393 p.en_US
dc.language.isoen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshAeronauticsen_US
dc.titleOptimizing HF antenna systems on the Dolphin and Sea Hawk helicoptersen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Aeronautical Engineering
dc.subject.authorAntenna Modelingen_US
dc.subject.authorAntennasen_US
dc.subject.authorHFen_US
dc.subject.authorNumerical Electromagnetic Code (NEC)en_US
dc.description.serviceLieutenant Commander, United States Coast Guarden_US
etd.thesisdegree.nameM.S. in Aeronautical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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