beam drop

beam drop

[′bēm ‚dräp]
(electromagnetism)
Distortion of the normal rectilinear fan pattern of a detection radar in which a portion of the fan is at a lower elevation than the rest of the fan.
References in periodicals archive ?
Burden's gigantic Beam Drop Inhotim, 2008, here looks just the right size.
Burden's Beam Drop, 2008--a game of pickup sticks played with steel I beams dropped from a crane into a pool of wet cement--thornily crowns a barren hilltop, looking like a 3-D Pollock made by God.
Although Beam Drop Antwerp is the result of a loosely controlled combination of accidents, the sculpture can easily compete with the impressive collection at the Middelheim Museum.
Upon completing this circuit, the laser beam drops 1 millimeter and sets out over new terrain.