INSTRUMENT LANDING SYSTEM IMPROVEMENT PROGRAM: FAR-FIELD MONITORING
Methods of far-field extrapolation monitoring of the ILS glide slope angle are investigated. The use of a quasilinearization algorithm to determine path angle and width from measurements below obstruction heights at the middle marker is described with results for various fault conditions tabulated. A precision space modulation quotient monitor (SMQ) for measuring high values of DDM at low signal levels is described. A description of investigations of a field strength monitor using the capture effect principle to sense changes in low altitude field strength caused by environmental effects is included. (Author)
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Corporate Authors:
Ohio University, Athens
3 Canterbury Drive
Athens, OH United States 45701 - Publication Date: 1975-1
Media Info
- Pagination: 87 p.
Subject/Index Terms
- TRT Terms: Air traffic control; Algorithms; Extrapolation; Far field; Field strength; Glide path systems; Instrument landing systems; Linearity; Measurement; Modulation; Monitoring; Probes (Measuring devices)
- Old TRIS Terms: Field intensity; Modulation; Probes
- Subject Areas: Operations and Traffic Management;
Filing Info
- Accession Number: 00166417
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: EER-5-21, FAA-RD-75-201
- Contract Numbers: DOT-FA69WA-2066
- Files: NTIS
- Created Date: Sep 28 2002 12:00AM