radar beam

radar beam

[′rā‚där ‚bēm]
(electromagnetism)
The movable beam of radio-frequency energy produced by a radar transmitting antenna; its shape is commonly defined as the loci of all points at which the power has decreased to one-half of that at the center of the beam.

radar beam

A beam of focused electromagnetic energy radiated by radar. It is akin to a searchlight beam, although not in the visible spectrum. See fan beam.
References in periodicals archive ?
Taylor said that dark depression at Phaethon's center "could be a crater or some other topographic depression that did not reflect the radar beam back to Earth.
When the radar beam reaches a target, like a rain drop, it induces minute voltages and current in the target.
Steerability is necessary to keep the radar beam trained on the sun, facilitating long observation times.
Furthermore, the product's radar beam can be emitted over a wider angular range, without requiring a mechanism to adjust the angle, as with previous versions.
Radar detection is abstracted as a solution of the intersection between the geometrical representation of radar beam and the targets.
As a radar beam propagates away from the dish, it spreads out and moves upward in the atmosphere, like a flashlight beam tilted slightly upward and shining across a vast room.
Unlike conventional mechanical apertures that steer a radar beam using motorized gimbals, Echodyne's MESA requires no moving parts to steer its beam.
Tenders are invited for Supply of Radar Beam Type Level Transmitter, Sus316, Model Pc / Each Required For 5(P) & Slop(P) Cots
Measurements are substantially more reliable even in narrow tanks because the radar beam avoids obstacles such as baffles on the tank walls, and is thus unhindered by interfering signals.
Combining the azimuth scanning capability of the AESA panel with that created by antenna rotation allows the radar beam to dwell for a longer time on targets of interest, allows more rapid track formation, and allows a range of azimuth scan rates to be created from an array turning at a single speed.
Unlike conventional radar, however, the use of the building's own WiFi signal to illuminate the target means there is no incoming radar beam that could alert the suspects to the surveillance.
When the satellite moves in the orbit, the radar beam center line intersects with the Earth surface to form a group of points, known as targets.

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