Accession Number : ADP006377

Title :   Bistatic Scattering Statistics of Deciduous Trees,

Corporate Author : ROME LAB HANSCOM AFB MA

Personal Author(s) : Rao, K. V. ; Stevens, W. G. ; Mendonca, J.

Report Date : SEP 1991

Pagination or Media Count : 12

Abstract : Theoretical predictions have shown that significant variations in the power scattered by a rough surface exist when the orientation of a linearly polarized bistatic receiver is changed with respect to the transmitter polarization. Experiments conducted at laser frequencies have verified the existence of these polarization variations. This present work was performed to determine if this behavior could be observed at microwave frequencies at a field test site. In this report the experimental results on the polarization dependence of bistatic scattering from deciduous trees are described. The bistatic scattered power from foliage (mixture of Birch, Maple, Ash and grass) at 3.2 GHz was measured as a function of the receiver polarization angle. This paper reports on data for one configuration: incidence angle of 80 degrees, elevation scattering angle of 84 degrees, and one azimuthal scattering angle of 105 degrees. The scattering surface size was approximately 4.5 square meters.

Descriptors :   *SCATTERING, *BISTATIC DETECTION, *FOLIAGE, *GROUND CLUTTER, *BISTATIC RADAR, ANGLES, ASHES, BEHAVIOR, CONFIGURATIONS, ELEVATION, FIELD TESTS, FUNCTIONS, LASERS, MICROWAVES, PAPER, POLARIZATION, POWER, PREDICTIONS, RECEIVERS, REPORTS, SITES, TRANSMITTERS, TREES, VARIATIONS, WORK, ANGLE OF INCIDENCE, DIELECTRIC PROPERTIES, ELECTROMAGNETIC WAVE PROPAGATION, SURFACE ROUGHNESS, RADAR ANTENNAS, TARGET DETECTION, MILITARY EQUIPMENT.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE