rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Fiber optic compass development
  name:
    name part: Park, Kyongtae
    name part: 1971-
    role:
      role term: creator
  name:
    name part: Eknoyan, Ohannes
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2005
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: remote
  abstract: A fiber optic system for measuring magnetic heading and pitch of one or more compass heads in a towed acoustic array has been developed as a cooperative effort between engineers at Fiber Dynamics, Inc., and faculty and graduate students at Texas A&M. An unconventional photolithographic process for producing a bar-code pattern on a curved (spherical) surface was successfully implemented. First, an absorption process for applying a thin layer of photoresist uniformly to the gold-coated surface of a glass sphere was perfected. Then, a system for defining the patterns in the metal was assembled. A LabView computer program controlled the system as required to define the bar code pattern in the metal. High-quality bar code patterns were produced on floating spheres by this method. The data acquisition/signal processing system digitized and processed the raw data returning from the compass heads, and computed magnetic heading and pitch from the data. Processing of the signal from a single compass head required readout of a 7-bit binary code giving coarse heading, using timing information to obtain fine heading, and measuring the apparent width of an analog bar to determine pitch. When monitoring multiple compass heads distributed along the fiber, a time-division demultiplexing technique was used for separating the data from the individual compass heads. For testing the system, the cylindrical sensor head was mounted on a machinist's table for rotating it through 360° in the horizontal plane to vary the heading, and through ±10° about a horizontal axis to vary pitch. Measured resolutions of the system were 0.044° for heading, and 0.85° for pitch.
  note: by Kyoungtae Park.
  note: "Major Subject: Electrical Engineering"
  note: Title from author supplied metadata (automated record created on Nov. , 09:45:50.)
  note: Vita.
  note: Abstract.
  note: Electronic resource.
  note: Mode of access: World Wide Web.
  note: System requirements: World Wide Web access and Adobe Acrobat Reader.
  note: Ph. D. Texas A&M University 2004.
  note: Includes bibliographical references.
  note: Text (Dissertation).
  subject:
    topic: Major electrical engineering
  subject:
    topic: FIBER
  subject:
    topic: BARCODE PATTERN
  subject:
    topic: OPTIC
  subject:
    topic: DATA ACQUISION
  subject:
    topic: COMPASS
  identifier: http://hdl.handle.net/1969.1/2760
  record info:
    record content source: TXA
    record creation date: 070108
    record change date: 20151104121825.0
    record identifier: in00002208834