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Hercules attitude processor (HAP)

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dc.contributor.authorHiggins, Robert Francis, 1962-en
dc.contributor.committeechairTront, Joseph G.en
dc.contributor.committeememberFlach, George E.en
dc.contributor.committeememberRicci, Fred J.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:14:00Zen
dc.date.adate2008-06-06en
dc.date.available2014-03-14T21:14:00Zen
dc.date.issued1992-05-05en
dc.date.rdate2008-06-06en
dc.date.sdate2008-06-06en
dc.description.abstractThe design and analysis of a microprocessor-based gyro attitude data processing system used to geolocate natural phenomena from space was performed. Operational software was written and a HERCULES Attitude Processor (HAP) unit was built and tested. Strict adherence to worst-case timing design criterion was a prime hardware design consideration. Weight, volume, and power requirements were also addressed. Redundancy was included for critical time maintenance functions. Hardware performance and accuracy was calculated and measured. Operational software was written to control the functions of the HAP unit. Algorithms were written to accurately process the high speed gyro attitude data. Data communication between subsystems in the HERCULES system was controlled by the software. Subsystem configuration, operating modes, self-testing, and resource management was performed by the operational software. Testing was performed on the HAP unit and operational software. Hardware and software performance was analyzed and is presented.en
dc.description.degreePh. D.en
dc.format.extentvi, 253 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06062008-165739en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06062008-165739/en
dc.identifier.urihttp://hdl.handle.net/10919/38349en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1992.H544.pdfen
dc.relation.isformatofOCLC# 27871348en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1992.H544en
dc.subject.lcshSpace photography -- Instruments -- Design and constructionen
dc.titleHercules attitude processor (HAP)en
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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