Measurements and Calculations of the Millimeter Wavelength RCS of a Top Hat and Bruderhedrals.
Abstract
Polarimetric radar cross sections (RCSs) were measured for a large top hat and three large Bruderhedrals at 35 and 93 GHz. The overall spread in the measured RCSs was 2 dB. It was found that the absolute RCS, as well as the dependence of the RCS on elevation angle, could be significantly altered by a slight misalignment of the target reflector. The calculations of these RCSs by theories and RCS simulation codes based on geometric and physical optics generally agreed with the measurements to within 3 dB. Radar calibrations using these reflectors, which are based on the predictions, are not reliable, however, if accuracy better than 3 dB is required. The measured values of the cross polarization RCS were very small compared to the copolarization ones, consistent with theoretical predictions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1997
- Accession Number
- ADA325523
Entities
People
- Joseph D. Silverstein
- Robert Bender
Organizations
- United States Army Research Laboratory