GEOMETRICAL CALCULATION OF CROSS-POLARIZATION EFFECTS IN ELECTROMAGNETIC BACK-SCATTERING,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1969
- Accession Number
- AD0684150
Entities
People
- S. A. Moszkowski
- S. D. Bloom
Organizations
- RAND Corporation