Contributing region

From Glossary of Meteorology

contributing region

(Sometimes called pulse volume, resolution volume, sampled volume.) In radar, the region in space that contains the targets that contribute to the received signal or echo arriving at a particular instant.

The contributing region is a volume in space determined by the beamwidth and pulse length of the radar. Specifically, the contributing region is the volume defined by one-half the pulse length in the radial direction and the beamwidth in the transverse direction.
See pulse volume.