SUP_PT1 — Protection or guard areas of Radio Reception Centres

Easement for the protection of radio-electric reception centres against electromagnetic disturbance established pursuant to Articles L. 57 to L. 62-1 and R. 27 to R. 39 of the Postal and Electronic Communications Code. This space field can be defined either in 2D or 3D in particular in the specific cases of airport release easements, protection easements of radio transmission centres. __Origin__ The geometric modeling of ' entity at ' origin of risk depends on the type of risk, the context of the PPR, the nature of the generator and its modeling in the data source or geographical repository from which it originates. For example, a water course may be represented by a polygon or a polyline according to its size and width, an ICPE by a point (if the location of its enclosure is not known) or by a polygon (especially from the grey area of the PPR).The geometry of this class d' objects is optional when: — this geometry is already carried by an object d'a geographical repository or d' an external data source, to which it is then recommended to refer to the ' help of its identifier (and thus avoid unnecessary duplication);- it does not exist because the origin of the risk cannot be precisely defined or localised (c' is the case of certain risks such as, for example, earthquakes, avalanches, sea submersions...)Nevertheless, as it is in practice rare to benefit from stable references to external objects, the geometry of l' origin of the risk will often result from the duplication of that of the #x27; object representing the #x27; origin of the risk. __Partner organisations__ DDT Val-d'Oise __Links annexes__ * [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-d262d139-c363-4730-b29f-a1c8a6a14020) * [COVADIS data standard: Surface Entity at #x27; Origin of Risk of PPRN](http://geostandards.developpement-durable.gouv.fr/afficherPageStandard.do?jeu=N_ORIG_RISQ_PPRN_AAAANNNN_S) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/4df6781fc3a80b35fc8c82c17b299c2de10d8db1)