Editing Radio navigation (section)

==International regulation==
'''Radionavigation service''' (short: '''RNS''') is – according to ''Article 1.42'' of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.42, definition: ''radionavigation service ''</ref> – defined as "''A radiodetermination service for the purpose of [[radionavigation]], including obstruction warning.''"

This service is a so-called [[Safety service|safety-of-life service]], must be protected for [[Interference (communication)|Interferences]], and is essential part of [[Navigation]].{{fact|date=July 2022}}

This ''[[radiocommunication service]]'' is classified in accordance with ''ITU Radio Regulations'' (article 1) as follows: <br />
[[Radiodetermination service]] (article 1.40) 
* [[Radiodetermination-satellite service]] (article 1.41)
*'''Radionavigation service''' (article 1.42)
**[[Radionavigation-satellite service]] (article 1.43) 
**[[Maritime radionavigation service]] (article 1.44) 
***[[Maritime radionavigation-satellite service]] (article 1.45) 
**[[Radio_navigation#Aeronautical|Aeronautical radionavigation service]] (article 1.46) 
***[[Aeronautical radionavigation-satellite service]] (article 1.47)

===Aeronautical===
[[File:EDDV-ILS 09R Glideslope.jpg|thumb|200px| [[Instrument landing system|ILS]]-antenna on [[Hannover Airport]] ]]
[[File:Deister-vdf.jpg|thumb|200px| VHF direction finder antenna of the ARNS on [[Deister]] nearby Hanover]]

'''Aeronautical radionavigation service''' (short: '''ARNS''') is – according to ''Article 1.46'' of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.46, definition: ''aeronautical radionavigation service ''</ref> – defined as "''A radionavigation service intended for the benefit and for the safe operation of aircraft''."

This service is a so-called [[Safety service|safety-of-life service]], must be protected against [[Interference (communication)|interference]], and is an essential part of [[navigation]].

===Maritime===
[[File:Rantum, LORAN-C Mast mit Abspannseilen.JPG|thumb| 270px| ''Radionavigation land station'' ([[LORAN]]-C-transmitter Rantum)]] [[File:Kolster radio compass.jpg|thumb|270px| ''Radionavigation  mobile station'' [[radio direction finder|(RDF)]] 1930]]

'''Maritime radionavigation service''' (short: '''MRNS''') is – according to ''Article 1.44'' of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.44, definition: ''maritime radionavigation service''</ref> – defined as "''A radionavigation service intended for the benefit and for the safe operation of ships''."

This service is a so-called [[Safety service|safety-of-life service]], must be protected for [[Interference (communication)|interferences]], and is essential part of [[navigation]].
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