
THE RADAR SYSTEM - OPERATIONAL PRINCIPLES
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paint is further elongated by the effect of spot size. For a
given screen size and spot diameter, the influence of the
spot size on the dimensions of the resolution cell
becomes less significant on the shorter range scales. The
influence of pulse length is independent of screen size. In
theory it is also independent of range scale but in practice
shorter range scales are normally associated with shorter
pulse lengths (see Section 2.3.4). The range discrimin-
ation is equal to the radial dimension of the resolution
cell and this is illustrated by the following numerical
example which uses some representativ ...