InstrumentLandingSystem
urn:aero:airm:1.0.0:ConceptualModel:Subjects:BaseInfrastructure:NavigationInfrastructure:InstrumentLandingSystem
A combination of radio navigation services intended to facilitate aircraft in landing by providing lateral and vertical guidance including indications of distance from the optimum point of landing.
Source:
EUROCONTROL ATM Lexicon,
Abbreviations:
ILS