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:
    non sort: A
    title: DSP embedded optical naviagtion system
  name:
    name part: Gunnam, Kiran Kumar
    name part: 1977-
    role:
      role term: creator
  name:
    name part: Kehtarnavaz, Nasser
    role:
      role term: thesis advisor.
  name:
    name part: Junkins, John L.
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2003
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Spacecraft missions such as spacecraft docking and formation flying require high precision relative position and attitude data. Although Global Positioining Systems can provide this capability near the earth, deep space missions require the use of alternative technologies. One such technology is the vision-based navigation (VISNAV) sensor system developed at Texas A & M University. VISNAV comprises an electro-optical sensor combined with light sources or beacons. This patented sensor has an analog detector in the focal plane with a rise time of a few microseconds. Accuracies better than one part in 2000 of the field of view have been obtained. This research presents a new approach involving simultaneous activation of beacons with frequency division multiplexing as part of the VISNAV sensor system. In addition, it discusses the synchronous demodulation process using digital heterodyning and decimating filter banks on a low-power fixed point DSP, which improves the accuracy of the sensor measurements and the reliability of the system. This research also presents an optimal and computationally efficient six-degree-of-freedom estimation algorithm using a new measurement model based on the attitude representation of Modified Rodrigues Parameters.
  note: by Kiran Kumar Gunnam.
  note: "Major Subject: Electrical Engineering"
  note: Title from author supplied metadata.
  note: Electronic resource.
  note: M.S. Texas A & M University 2003.
  note: Includes bibliographical references.
  note: Text (Thesis).
  subject:
    topic: Major electrical engineering
  subject:
    topic: active beacons
  subject:
    topic: decimating filter bank
  subject:
    topic: digital signal processor (DSP)
  subject:
    topic: frequency division multiplexing (FDM)
  subject:
    topic: modified Rodrigues parameters (MRPs)
  subject:
    topic: noncontact optoelectronic sensor
  subject:
    topic: positioning system
  subject:
    topic: Gaussian least squares differential correction (GLSDC)
  identifier: http://hdl.handle.net/1969.1/13
  record info:
    record content source: TXA
    record creation date: 030912
    record change date: 20151025094945.0
    record identifier: in00001767580