Accession Number:

AD0684150

Title:

GEOMETRICAL CALCULATION OF CROSS-POLARIZATION EFFECTS IN ELECTROMAGNETIC BACK-SCATTERING,

Descriptive Note:

Corporate Author:

RAND CORP SANTA MONICA CALIF

Personal Author(s):

Report Date:

1969-01-01

Pagination or Media Count:

40.0

Abstract:

The report describes the cross-polarized return for backscattering of polarized radar pulses by a turbulent plasma. A general expression of the second order backscattered and cross-polarized cross section is derived, using arguments from geometrical optics. Then, the results for linear and circular polarized waves are compared. One finds that for scattering by a cylindrical medium with the axis parallel to the direction of the radar pulse, the cross section is twice as large for circular polarization as for linear polarization. The dependence of this ratio on the relative orientation angle of the beam axis and cylinder axis is considered, as is the dependence of this ratio on the autocorrelation function in the turbulent medium. It is shown that the scattering cross section of a polarized beam by a medium, as discussed in the text, is identical to the long wavelength limit of the quantum mechanical formula for the Crompton cross section. Author

Subject Categories:

  • Atmospheric Physics
  • Active and Passive Radar Detection and Equipment
  • Plasma Physics and Magnetohydrodynamics
  • Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE