Electromagnetic wave scattering from some vegetation samples

• Published in: IEEE transactions on geoscience and remote sensing Vol. 26; no. 6; pp. 799 - 808
• Main Authors: Karam, M.A., Fung, A.K., Antar, Y.M.M.
• Format: Journal Article
• Language: English
• Published: Legacy CDMS IEEE 01.11.1988; Institute of Electrical and Electronics Engineers
• Subjects: Animal, plant and microbial ecology; Backscatter; Biological and medical sciences; Dielectric constant; Dielectric measurements; Earth Resources And Remote Sensing; Electromagnetic scattering; Engine cylinders; Fundamental and applied biological sciences. Psychology; General aspects. Techniques; Integral equations; Needles; Rayleigh scattering; Teledetection and vegetation maps; Tensile stress; Vegetation; Methodology; Electromagnetic wave; Remote sensing; Wave scattering; Vegetation
• ISSN: 0196-2892; 1558-0644
• DOI: 10.1109/36.7711

For an incident plane wave, the field inside a thin scatterer (disk and needle) is estimated by the generalized Rayleigh-Gans (GRG) approximation. This leads to a scattering amplitude tensor equal to that obtained via the Rayleigh approximation (dipole term) with a modifying function. For a finite-length cylinder the inner field is estimated by the corresponding field for the same cylinder of infinite length. The effects of different approaches in estimating the field inside the scatterer on the backscattering cross section are illustrated numerically for a circular disk, a needle and a finite-length cylinder as a function of the wave number and the incidence angle. Finally, the modeling predictions are compared with measurements.< >