volume scan

In radar, a series of consecutive scans, either around the horizon or in a sector, that together sweep out a volume of space.

Volume scans are typically performed by conducting a series of horizontal scans, each at a progressively higher elevation angle. A less common method is to conduct a series of vertical scans between the horizon and the zenith, each at a different azimuth angle. Volume scans are used to develop three-dimensional views of the reflectivity field and, in the case of a Doppler radar, the radial velocity field associated with the targets illuminated by the radar.
See scanning.

(Coined word for radio detection and ranging.) An electronic instrument used for the detection and ranging of distant objects of such composition that they scatter or reflect radio energy.