ILS Mathematical Modeling Study of the Effects of an ASR-9 Structure at the Long Island MacArthur Airport, Islip, New York, Runway 24
Abstract
This Technical Note describes the instrument landing system (ILS) math modeling performed by the Federal Aviation Administration (FAA) Technical Center at the request of the Eastern Region. Computed localizer data are presented showing the effects of an ASR-9 antenna structure proposed for construction on the performance of an ILS localizer serving runway 24 at the Long Island MacArthur Airport. The ASR-9 antenna structure was modeled at four proposed sites. The Eastern Region is concerned that radio frequency signal reflections from the ASR-9 structure my degrade the localizer course. Modeled course structure results indicate that Category I localizer performance should be maintained with the Wilcox 8-element log periodic dipole antenna with the ASR-9 structure constructed at any of the proposed locations. The ASR-9 structure provided minimal signal interference at each site modeled. Computed clearance orbit results indicate satisfactory linearity, course crossover, and signal clearance levels.... Instrument Landing System Math Modeling, ILS, ILS localizer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1992
- Accession Number
- ADA260011
Entities
People
- James D. Rambone
Organizations
- Federal Aviation Administration