Accession Number : AD0765761

Title :   Evaluation of ILS Localizer Signal Specification during Ground Rollout.

Descriptive Note : Final rept. Jul 71-Jul 72,

Corporate Author : TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MASS

Personal Author(s) : Koziol,Joseph S. , Jr

Report Date : AUG 1973

Pagination or Media Count : 98

Abstract : The International Civil Aviation Organization (ICAO) has developed a specification for localizer information on the runway surface appropriate for rollout guidance during Category III B operations. The suitability of this specification was evaluated by systems analysis and simulation and is reported herein. The results of the performance evaluation for a representative rollout guidance system indicate that the specification is too stringent especially for higher frequency type localizer disturbances and therefore should consider the spectral characteristics of the localizer disturbance. A more relaxed specification was therefore developed by taking additional advantage of the sensitivity effect of the localizer receiver and the attenuating effect of the rollout guidance system on localizer disturbances.

Descriptors :   (*GLIDE PATH SYSTEMS, RADIO TRANSMISSION), INSTRUMENT LANDINGS, SPECIFICATIONS, SYSTEMS ENGINEERING

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE