radio beam
Definition
Noun: A concentrated, directional signal transmitted as a guide, especially for aircraft or marine navigation. It establishes a precise path in space.
Usage
The term "radio beam" is used to describe the invisible path created by a transmitted radio signal. It is primarily a technical term in aviation and navigation contexts. * Pilots follow the radio beam to stay on course during low visibility. * The lighthouse emits a radio beam as a navigational aid for ships.
Examples
- The aircraft was safely guided to the runway by the airport's radio beam.
- Navigators used the radio beam to plot their exact position over the ocean.
Advanced Usage
- Instrument Landing System (ILS): A standard system that uses a radio beam to provide horizontal and vertical guidance to aircraft on final approach to a runway.
- Beam Riding: A guidance method where a vehicle (like a missile) is designed to follow a radio beam to its target.
Variants and Related Words
- Beacon: A device that transmits a radio beam for navigation or identification.
- Radial: A specific, directed line of a radio beam from a navigation station.
- Localizer: The component of an ILS that provides the lateral (left/right) radio beam for runway alignment.
Synonyms
- Navigation signal
- Guidance beam
- Directional signal
Related Phrases
- On the beam: Correctly following the intended course or path; thinking or acting correctly. (This idiom originates from aviation navigation).
- Your analysis is right on the beam.
- Off the beam: Incorrect or mistaken; deviating from the correct course.
- His estimate was completely off the beam.
Noun
-
a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weather
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