This report documents the implementation of some old and new techniques to the problem of command-and-control signaling within a Category III instrument landing system. The old techniques include the use of tone signaling over balanced lines, along with isolation transformers and gas-discharge elements for lightning protection. The new methods include the application of microprocessor control devices to supervise, format, and interpret all communications. Additional features afforded by the microprocessor approach include automatic and manual maintenance logging at the control tower, more reliable transmission error detection, enhanced system status displays, and a self-contained operator training feature. (Author)

  • Corporate Authors:

    Purdue University

    School of Electrical and Computer Engineering, 465 Northwestern Avenue
    West Lafayette, IN  United States  47907
  • Authors:
    • Belter, S E
    • Williams, C R
    • Bass, S C
  • Publication Date: 1978-1

Media Info

  • Pagination: 182 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00175964
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-RD-78-25 Final Rpt.
  • Contract Numbers: DOT-FA-74WA-3518
  • Files: NTIS, TRIS
  • Created Date: Jun 28 1978 12:00AM