Accession Number:

ADA415541

Title:

Antenna Effects on Polarimetric Imagery in Ultrawide Synthetic Aperture Radar

Descriptive Note:

Final rept. Aug 2001-Jul 2002

Corporate Author:

INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA

Report Date:

2002-09-01

Pagination or Media Count:

16.0

Abstract:

This paper evaluates the effect of practical antenna limitations on the polarimetric quality of ultrawide SAR imagery. For this analysis we have exploited a thorough set of measurements made on a prototype ultrawide SAR antenna designed to meet a set of realistic requirements consistent with use on UAV platforms as well as manned aircraft. These data comprise fully polarimetric, phase-coherent patterns measured over a full 4 pi steradians. From these data we are able to synthesize the polarimetric response of an ideal target set as it would be measured over an ultrawide SAR aperture 150-550 MHz and 60 deg. By decomposing this synthesized measurement in terms of a canonical basis set of polarized scatterers we can exhibit the level of polarimetric distortions due to a specific practical antenna.

Subject Categories:

  • Military Aircraft Operations
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE