Jose,K A; Dr.Nair, K G(Cochin University of Science And Technology, July , 1989)
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Abstract:
The- classic: experiment of Heinrich Hertz verified
the theoretical predict him of Maxwell that kxnfli radio and
light waves are physical phenomena governed by the same
physical laws. This has started a.rnnJ era of interest in
interaction of electromagnetic energy with matter. The
scattering of electromagnetic waves from a target is cleverly
utilized im1 RADAR. This electronic system used tx> detect
and locate objects under unfavourable conditions or obscuration
that would render the unaided eye useless. It also
provides a means for measuring precisely the range, or distance
of an object and the speed of a moving object.
when an obstacle is illuminated by electromagnetic
waves, energy is dispersed in all directions. The dispersed
energy depends on the size, shape and composition of the
obstacle and frequency and nature of the incident wave.
This distribution of energy’ is known as ‘scattering’ and
the obstacle as ‘scatterer’ or 'target'.
Description:
Department of Electronics, Cochin University of Science And Technology