Analysis of the Exposure Levels and Potential Biologic Effects of the PAVE PAWS Radar System (1979) / Chapter Skim
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Pages 82-84
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From page 82... ...
, q.v. FAR AND NEAR FIELDS; The E and H fields of an electromagnetic wave that is propagating in a uniform medium are always at right angles to each other and to the line of propagation in the "far field"; however, waves near an emitting source are complex in the sense that relative magnitudes and orientations of E and H fields can each vary greatly.
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From page 83... ...
In order to convey information by radiating electromagnetic energy, it must be modulated. MULTIPATH RADIATION; In contrast with a so-called plane wave, which moves in a straight line through space, an area or volume where electromagnetic waves arrive from different directions because of reflection or multiple sources is said to be the site of multipath radiation.
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From page 84... ...
. TIME-AVERAGED POWER DENSITY; The integral of the product of the instantaneous power density of pulsed electromagnetic radiation and the pulse duration taken over a characteristic sampling interval and divided by the duration of the sampling interval.
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