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dc.contributor.advisorOlsen, Richard Christopher
dc.contributor.authorOlson, Darren Montgomery
dc.dateSeptember 1994
dc.date.accessioned2014-08-13T20:27:44Z
dc.date.available2014-08-13T20:27:44Z
dc.date.issued1994-09
dc.identifier.urihttp://hdl.handle.net/10945/43046
dc.descriptionApproved for public release, distribution unlimiteden_US
dc.description.abstractASA's Plasma Motor Generator (PMG) tethered satellite mission was launched in June 1993 to verify the ability of hollow cathode plasma sources to couple electric currents from an electrodynamic tether into the ambient ionospheric plasma. This large-scale coupling process resulted in turbulent plasma signatures associated with the orbiting plasma generator, which propagated over great distances along the earth's geomagnetic field lines. VHF radars in Hilo, Hawaii and Jicamarca, Peru recorded observations of these field-aligned disturbances as part of the experiment. Based on analysis of these radar observations and tracking data of PMG's orbit, the effective propagation velocity of these traveling plasma waveforms was calculated to be of the order of 1000 meters per second. Detection of these disturbances, associated with PMG's passage overhead, supports the existence of a phantom current loop allowing current flow along the magnetic field lines of the earth and into the lower ionosphere from either end of an electrodynamic tether.en_US
dc.format.extent82 p.en_US
dc.language.isoen_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. Copyright protection is not available for this work in the United States.en_US
dc.titleRadar observations of field-aligned plasma propagations associated with NASA's PMG experimenten_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Systems Technology [Space Systems Operations]en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineSystems Technology [Space Systems Operations]en_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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