Antenna illumination effects on measurements of rough surface scattering

Author

Monakov, A.A. ; Vivekanandan, J. ; Nyström, A. ; Stjernman, A.

Author_Institution

Swedish Inst. of Space Phys., Kiruna, Sweden

fYear

1993

fDate

18-21 Aug 1993

Firstpage

231

Abstract

An analysis of the effects of the antenna radiation pattern on estimates of the differential scattering coefficient (σ⁰) of rough surfaces is performed. Kirchhoff´s approximation is used to describe rough surface scattering. A comparison between normalized σ⁰ derived in the cases of plane wave illumination (pencil beam antenna) and spherical wave illumination (generalized Gaussian beam antenna) is made. Sensitivity of the differential scattering coefficient with regards to the antenna radiation pattern is studied

Keywords

antenna radiation patterns; backscatter; electromagnetic wave scattering; radar cross-sections; Kirchhoff´s approximation; antenna radiation pattern; differential scattering coefficient; generalized Gaussian beam antenna; illumination effects; pencil beam antenna; plane wave illumination; rough surface scattering; spherical wave illumination; Antenna measurements; Antenna radiation patterns; Directional antennas; Kirchhoff´s Law; Lighting; Pattern analysis; Performance analysis; Rough surfaces; Scattering; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322534

Filename

322534