ILS LOCALIZER ALIGNMENT AND STRUCTURE MODEL

Nonstationary statistical analysis of flight inspection data for 13 Category II and Category II-training Localizer facilities is used to obtain statistical models for the Localizer alignment error and structure. Models for these two components of Localizer anomalies are given in terms of two linear differential equations and Gaussian probability density functions especially useful for landing system performance analysis. The structure component of the received Localizer guidance signal is found to be stationary, to have a standard deviation of 2.47 microamperes, and a characteristic length of 1309. ft. The alignment error component of the received Localizer guidance signal is found to have a mean of 2.25 microamperes (probably due to the relatively small sample of different Localizer facilities), and a standard deviation of 4.92 microamperes.

  • Corporate Authors:

    Systems Technology, Incorporated

    13766 South Hawthorne Boulevard
    Hawthorne, CA  USA  90250

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    ,   USA 
  • Authors:
    • Clement, W F
    • Hofmann, L G
    • Klein, J A
  • Publication Date: 1975-5

Media Info

  • Pagination: 102 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00094464
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-RD-75-102 Final Rpt., STI-TR-1043-3
  • Contract Numbers: DOT-FA74WA-3340
  • Files: NTIS, TRIS, USDOT
  • Created Date: Apr 21 1976 12:00AM