On the farzone distribution of a scattered field  A numerical experiment
Abstract
The problem of determining the farzone distribution of a scattered field is of practical importance in radiosounding studies of the ionosphere. In the present paper an attempt is made to establish a criterion defining when and at what distances from the scattering medium it is permissible to use the normal distribution of the phasequadrature component of the scattered field. As a first approximation to solving this problem, a numerical experiment was conducted to determine the domain of the applicability of the normal distribution of the phasequadrature components of radiation that has passed through a onedimensional phase screen for different values of the dispersion of phase fluctuations on the screen. It is shown that an increase in the phasemodulation depth on the screen produces an increase in the 'rate of normalization' of the scattered field, i.e., a decrease in the distance beginning with which the statistics of the phasequadrature component is described by the normal distribution.
 Publication:

Radiotekhnika i Elektronika
 Pub Date:
 March 1983
 Bibcode:
 1983RaEl...28..596G
 Keywords:

 Electromagnetic Scattering;
 Far Fields;
 Ionospheric Sounding;
 Radio Probing;
 Phase Modulation;
 Plane Waves;
 Communications and Radar