ground-based navigation aid

ground-based navigation aid

[′grau̇nd ‚bāst ‚nav·ə′gā·shən ‚ād]
(navigation)
That portion of a navigation system which is located on the ground and emits signals or receives them from crafts or vehicles; these signals provide the navigation information.
References in periodicals archive ?
LPV (Localizer Performance with Vertical Guidance) permits aircraft guided approaches operationally equivalent to ILS Cat 1 without the need for ground-based navigation aid infrastructure.
The ground-based navigation aid which Glasgow Airport currently uses to guide aircraft to and from the airfield will be decommissioned in 2019.
Airport bosses hope when the ground-based navigation aids are decommissioned in 2019 amid a move to satellite-based navigational systems, it will help reduce the amount of time planes queue, both in the air and on the ground, and reduce overall CO2 and fuel emissions.
Both have embarked on a global initiative to assist airports with redesigning the airways within their airspace to allow them to move away from legacy ground-based navigation aids and to PBN procedures.
The RNP AR procedure allows aircraft to automatically fly accurate trajectories without relying on ground-based navigation aids, optimises airspace utilisation and reduces diversions in difficult weather conditions.
RNP uses GPS to help pilots optimise flight approach and departure tracks containing curves and vertical profiles that could not be flown accurately using ground-based navigation aids, says Qantas's group executive for government and corporate affairs, David Epstein.
This technology, pioneered by Alaska Airlines in Juneau, allows aircraft to fly safer, more reliable landings and reduces reliance on ground-based navigation aids.
Unlike traditional ground-based navigation aids, WAAS provides augmentation information to GPS receivers, enhancing their accuracy throughout the National Airspace System.
GAGAN is one of several systems being deployed around the world as part of an initiative endorsed by the International Civil Aviation Organization to help civil aircraft transition to satellite-based signals from ground-based navigation aids.
But when they fly into low-visibility conditions like fog, rain, snow and blowing sand, pilots have difficulty making a safe approach and landing without ground-based navigation aids.
The new approach allows aircraft to automatically fly accurate trajectories without depending on ground-based navigation aids, optimizes airspace utilisation and reduces diversions in difficult weather conditions.

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