SUP_T8 - Radio Reception Centre Areas and Clearance Areas
Description
T8 easements are radio servitudes for the protection of air navigation facilities (airport navigation and landing facilities, national meteorological transmitting centres and radio beams)They are covered by the same texts as the PT1 and PT2 easements.The base of an easement is the space field (i.e., the geographical area) within which the easement applies. This spatial field may be defined either in 2D or in 3D, in particular in the particular cases of airport clearance easements, radio transmission centre protection easements.The base shall include primary clearance zones, secondary clearance zones, special clearance zones and clearance zones.The maximum distance separating the boundary of a radio centre and the perimeter of the easement zones may not exceed:- 2,000 metres in the case of a secondary clearance zone;- 400 metres in the case of a primary clearance zone surrounding an aeronautical safety installation or a radio directional centre;- 200 metres in the case of a primary clearance zone surrounding a centre other than those mentioned above;- 5,000 metres in the case of a clearance zone.The maximum width of a special clearance zone protecting a radio link, between two fixed points computed perpendicularly to the axis of the path of the radio waves, may not exceed 50 metres on either side of the ellipsis of the microwave beam. In practice, the beam shall be assimilated to a strip and the attitude shall not exceed 50 m on either side of the axis.The maximum width of a clearance area protecting a radiodetermination or radionavigation station shall not exceed the width of the angular area explored by the station, increased, where appropriate, by a safety margin of not more than one degree beyond the two limits of that area.
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Tags
- amenagement-urbanisme-assiette-servitude
- donnees-ouvertes