Minimize Coaxial Cable Compared to Conventional Localizer SystemsĪIRPORT EFFICIENCY AT ITS PEAK………… The Watts Model 201 Highly Directive Localizer System provides final approach azimuth guidance information to a landing aircraft, enabling the pilot or autopilot to maintain the proper course during the approach and landing.Frangible Design – Thin Wall Fiberglass Tubing Construction.Potential to Provide a Greater Density of ILS Localizer Systems and.Potential to Provide Efficient CAT II/III Operations with Super Jumbo Jets such as the Airbus A380.Measurement Systems that Results from Multipath Signals Increased Confidence that all Airborne Receivers will Provide the Same.Provides Substantial Opportunities to Permit New Construction on andĪround the Airport Property Without Degrading the ILS.Of Existing Taxiways to Increase Flight Operations Provides Significant Opportunity to Promote New Taxiways and Greater Use.Provides Significant Opportunity to Increase the Number of Flight Operations.The Smallest Critical and Sensitive Areas of any ILS Localizer.Long Term Category II/III Performance – Minimize Future Downtime andĬosts Associated with Periodic Upgrades of the ILS.Can be Configured to Provide a Narrow Beam Back-course.Designed to Interface with the Electronic Equipment of any Manufacturer.The Model 201-8 Two Frequency Localizer System: Combination of the Model 201 Wide-Aperture Slotted Cable Course Antenna Array with the 8-Element LPD Reduced Clearance-Sector Antenna Array meets all FAA Flight Inspection requirements.The 8-Element LPD Reduced Clearance-Sector Antenna Array: Provides limited azimuthal coverage with course roughness comparable to a 14-element array since energy is suppressed outside +/- 15 degrees in azimuth and meets usable distance.A straight horizontal run of coaxial cable, placed centrally perpendicular to the extension of the runway centerline, is symmetrically fed from both ends by an RF bridge in sum and difference modes. Model 201 Wide-Aperture Slotted Cable Course Antenna: The narrow course beam produces Category III signal-in-space course structure quality and adequate signal levels to meet all FAA usable distance requirements. a) the ILS critical area is an area of defined dimensions about the localizer and glide path antennas where vehicles, including aircraft, are excluded during all ILS operations. This invention relates to antennas for simultaneous transmission of sum and difference patterns as in a runway localizer for instrument landing of airplanes.Minimize Coaxial Cable and Low Tune-Up Time – Adjustment by Trimming One Coaxial Cable.Modular Course Antenna – Adjustable Antenna Aperture.Provides Maximum Runway Capacity, Allowing Increased Airport Development and New Construction.Substantially Reduces ILS Critical and Sensitive Areas.Rengarajan, “Genetic Algorithms in the Design and Optimization of Antenna Array Patterns”, IEEE Trans. Rodriguez-Gonzalez, E.Villanueva-Lopez, and S. Īyman Hamdy Kassem, Optimum Placement of Satellite Components with a Genetic Algorithm, (2011) International Review of Aerospace Engineering, (IREASE), 4 (2), pp. Masoud Sabaghi, Seyed Morteza Alizadeh, Seyed Reza Hadian, Goodarz Cheraghi, Ali Bamani, Comparison the Operation of Genetic Algorithm and Particle Swarm Optimization in Controlling a Microturbine Generation System, (2011) International Review of Aerospace Engineering, (IREASE), 4 (3), pp. Rahmat-Samii, Yahya Michielssen Eric, Electromagnetic optimization by genetic algorithms. Although a few installations block the back course, typically the localizer front course extends past the antenna to the back course, even if one is not charted for use. Jackson, Improvements on the Instrument Landing System, 1959 IRE Transactions On Aeronautical And Navigational Electronics. Recall that unlike a VOR, the localizer course you set is irrelevant to CDI behavior the CDI merely indicates your relationship to the localizer regardless of the course setting. Hakonsen, Improved Antenna for ILS Localizers Systems, IEEE Transactions On Aerospace And Electronic Systems Vol. V.V.Sarwate, Electromagnetic Fields and Waves, New Age International Publishers. Balanis, Antenna Theory - Analysis and Design (3rd Edition), 2005 John Wiley & Sons. M.Eydoux, J.L.Jonquierre, Introduction à L’ILS-VOR ENAC, 1979.Ĭ.A.
ICAO Annex 10 Volume 1, Radio Navigation Aids, Fifth Edition - July 1996
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