Measurements of Radar Backscatter from an Artificial Tree: An Indication of Azimuthal Variations and Polarization Sensitivity of Trees

Abstract

Measurements of radar backscatter from an artificial tree were made in the laboratory at 6 and 10 GHz at horizontal incidence. The system had a resolution cylinder 18cm in diameter and 11 cm long, so about half of the tree (30.5 cm high) was within the beam. The mean returned power from the target with leaves was always higher than that from the target without leaves, as expected. The signal faded with an exponential distribution when the artificial tree was rotated about its trunk, with no angular trend apparent. When the leaves were present, tilted polarizations gave results favouring an angle corresponding with that of the branches. When leaves were absent, the trunk of the tree dominated the radar backscatter at all polarizations.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Radar--Applications; Remote Sensing--Environmental Applications; Azimuthal Variations; Polarization Angle; Polarization Sensitivity; Radar Backscatter; Vegetation Monitoring; Electromagnetic Waves, Artificial Tree; Azimuthal Variation; Polarization Sensitivity; Tree

International Standard Serial Number (ISSN)

0143-1161

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1991 Taylor & Francis, All rights reserved.

Publication Date

01 Mar 1991

Link to Full Text

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