Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3328

b) 5 dB for one degree or 9 dB for 2 degree or larger beamwidth antennas at 2.5 m (8 ft) above the runway surface, at the MLS datum point, or at the farthest point of the runway centre line which is in line of sight of the azimuth antenna. Note Near the runway surface the approach a imuth e uipment will normally provide power densities higher than those specified for angle signals in to support auto land operations Attachment provides guidance as regards antenna beamwidth and power budget considerations Note The specifications for coverage in and ma e provision for difficult ground e uipment siting conditions in which it may not be feasible to provide the power density specified in 3.11.5 Ground equipment characteristics 3.11.5.1 Synchroni ation and monitoring The synchronization of the time-division-multiplexed angle guidance and data transmissions which are listed in 3.11.4.3.3 shall be monitored. Note Specific monitoring re uirements for various M S functions are specified in and 3.11.5.1.1 Residual radiation of M S functions The residual radiation of an MLS function at times when another function is radiating shall be at least 70 dB below the level provided when transmitting. Note The acceptable level of residual radiation for a particular function is that level which has no adverse effect on the reception of any other function and is dependent upon e uipment siting and aircraft position 3.11.5.2 A imuth guidance e uipment 3.11.5.2.1 Scanning beam characteristics Azimuth ground equipment antennas shall produce a fan-shaped beam which is narrow in the horizontal plane, broad in the vertical plane and which is scanned horizontally between the limits of the proportional guidance sector. 3.11.5.2.1.1 Coordinate system Azimuth guidance information shall be radiated in either conical or planar coordinates. 3.11.5.2.1.2 Antenna beamwidth The antenna beamwidth shall not exceed 4 degrees. Note It is intended that the detected scanning beam envelope throughout the coverage should not exceed microseconds (e uivalent to a beamwidth of degrees) in order to ensure proper angle decoding by the airborne e uipment 3.11.5.2.1.3 Scanning beam shape The minus 10-dB points on the beam envelope shall be displaced from the beam centre by at least 0.76 beamwidth, but not more than 0.96 beamwidth. Note The beam shape described applies on boresight in a multipath free environment using a suitable filter Information on beam shape and side lobes is provided in Attachment and 3.11.5.2.2 Coverage Note Diagrams illustrating the coverage re uirements specified herein are contained in Attachment Figures A and 3.11.5.2.2.1 Approach a imuth The approach azimuth ground equipment shall provide guidance information in at least the following volumes of space: 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I 23/11/06 3.11.5.2.2.1.1 Approach region

Source: https://magyarkozlony.hu/hivatalos-lapok/4c6310a937d14bac566ee9c9d944896656c292dd/dokumentumok/5a6ac3c6db12e692ae41096677ad5f072d2cc9f3/letoltes