Evaluation of ILS Localizer Signal Specification during Ground Rollout.
Final rept. Jul 71-Jul 72,
TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MASS
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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.
- Air Navigation and Guidance