Accession Number:

ADA021636

Title:

ILS Localizer Alignment and Structure Model.

Descriptive Note:

Final rept. 29 Oct 74-29 Sep 75, on Phase 2, Part 2,

Corporate Author:

SYSTEMS TECHNOLOGY INC HAWTHORNE CALIF

Personal Author(s):

• Clement,W. F.
• Hofmann,L. G.
• Klein,J. A.

Report Date:

1975-05-01

Pagination or Media Count:

102.0

Abstract:

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.

Descriptors:

• *INSTRUMENT LANDINGS
• POWER SPECTRA
• ALIGNMENT
• ERRORS
• STATISTICAL ANALYSIS
• SPECTRAL ENERGY DISTRIBUTION
• RADIO BEAMS
• GLIDE PATH SYSTEMS

Subject Categories:

• Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE