DocumentCode :
994399
Title :
Electromagnetic reflection from an extended turbulent medium: Cumulative forward-scatter single-backscatter approximation
Author :
de Wolf, David A.
Author_Institution :
RCA Labs., Princeton, NJ, USA
Volume :
19
Issue :
2
fYear :
1971
fDate :
3/1/1971 12:00:00 AM
Firstpage :
254
Lastpage :
262
Abstract :
The backscatter cross section 
for high-frequency irradiated turbulent dielectric media, many mean free paths 
wide, is computed. The length is the distance into the medium over which the mean electric field decreases in amplitude by a factor 
. Previous calculations have always been restricted to 
. It is found that increases from the Born approximation 
for medium width to 
for 
, and the theory is valid as long as 
, a significant improvement over the Born approximation, when the macroscale 
is much larger than the wavelength 
. The improvement is due to incorporation of the dominant effects of cumulative forward scattering in the local electric field in the medium. A rigorous and a heuristic derivation are given. The transitional behavior is discussed and a simple physical interpretation is given.
for high-frequency irradiated turbulent dielectric media, many mean free paths wide, is computed. The length is the distance into the medium over which the mean electric field decreases in amplitude by a factor . Previous calculations have always been restricted to . It is found that increases from the Born approximation for medium width to for , and the theory is valid as long as , a significant improvement over the Born approximation, when the macroscale is much larger than the wavelength . The improvement is due to incorporation of the dominant effects of cumulative forward scattering in the local electric field in the medium. A rigorous and a heuristic derivation are given. The transitional behavior is discussed and a simple physical interpretation is given.Keywords :
Electromagnetic scattering by random media; Approximation methods; Dielectrics; Electromagnetic reflection; Electromagnetic scattering; Electrons; Force measurement; Optical reflection; Polarization; Radar scattering; Space vector pulse width modulation;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1971.1139894
Filename :
1139894
Link To Document :
