Accession Number:

AD0750071

Title:

Instrument Landing System Improvement Program

Descriptive Note:

Interim rept. no. 3, Feb 1971-Jan 1972

Corporate Author:

OHIO UNIV ATHENS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1972-06-01

Pagination or Media Count:

330.0

Abstract:

Results of technical investigations to provide improvement in ILS performance are presented. More than 12 separate tasks are reported with major emphases on integral analog monitoring for the glide slope and localizer, new localizer design for minimization of path perturbation due to multipath, and development of a mathematical model for predicting effects on the glide path of signals reflecting from jumbo aircraft. Also, results were obtained from analyses of snow cover effects on the glide path. Analyses to determine modulator and bridge tolerances are presented together with recommendations for revised tolerances. Specifications and tolerances are presented for preparation of the ground planes in the vicinity of image glide paths. These are based on previously developed mathematical models. Conclusions and recommendations for improvements in glide path performance at specific sites are presented.

Subject Categories:

  • Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE