Accession Number:

ADA282300

Title:

Clutter Signal Polarization in Bistatic Radar: Effect of Antenna Sidelobe Clutter

Descriptive Note:

Rept. for Nov 1993-May 1994

Corporate Author:

ROME LAB HANSCOM AFB MA

Personal Author(s):

Report Date:

1994-05-01

Pagination or Media Count:

34.0

Abstract:

Sidelobe contributions to a radar signals polarization may distort the polarization of clutter originating in the mainbeam. To assure that radar clutter polarization measurements are accurate and that polarization nulling algorithms under consideration would work properly, it is necessary to analyze the contributions of antenna sidelobe clutter to signal polarization. This report considers two bistatic radar configurations over homogeneous terrain. The terrain is represented by the two-scale-of-roughness bistatic scattering model. Two antenna models are used, one a square aperture, and the other a simple approximation to a circular aperture with adjustable sidelobe levels. The results for the square aperture show a small change in the signal polarization from the mainbeam-only value when the sidelobes are added in. For the adjustable sidelobe level antenna the sidelobe corruption is small until the uniform sidelobe level reaches -20 dB. Bistatic radar, Polarization, Sidelobe clutter.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE