Accession Number : AD0434779


Title :   THE DISTORTION CUMULONIMBUS PRECIPITATION OBSERVED BY RADAR,


Descriptive Note : Technical scientific note.


Corporate Author : IMPERIAL COLL OF SCIENCE AND TECHNOLOGY LONDON (ENGLAND)


Personal Author(s) : Probert-Jones,J R


Report Date : Nov 1963


Pagination or Media Count : 24


Abstract : The intensity of the returned signal at any point on a radar display is due to the backscattering from all the elements within the volume of the pulse. The depth of the pulse in range is only small, but its width both in azimuth and elevation is proportional to range, and significant power can be received from well outside the half-power points. This integration over the pulse volume produces a distortion of the intensity pattern, whose effect increases with range. In particular, strong gradients of intensity such as occur at the edges of cumulonimbus precipitation will be smoothed out, so that echo will be displayed outside the true edge of the precipitation. (Author)


Descriptors :   *RADAR PULSES , RADAR CROSS SECTIONS , CLOUDS , METEOROLOGICAL RADAR , CUMULONIMBUS CLOUDS , STORMS , INTENSITY , ATTENUATION , DISPLAY SYSTEMS


Distribution Statement : APPROVED FOR PUBLIC RELEASE