Fluctuation statistics of millimeter-wave scattering from distributed targets

Author

Ulaby, Fawwaz T. ; Haddock, Thomas F. ; Austin, Richard T.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

26

Issue

3

fYear

1988

fDate

5/1/1988 12:00:00 AM

Firstpage

268

Lastpage

281

Abstract

The applicability of the Rayleigh fading model for characterizing radar scattering from terrain is examined at 35 GHz for both backscattering and bistatic scattering. The model is found to be in excellent agreement with experimental observations for single-frequency observations of uniform targets such as asphalt and snow-covered ground. The use of frequency averaging to reduce signal fading variations was examined experimentally by sweeping the radar signal from 34-36 GHz in 401 steps. The results show that the formulation based on the Rayleigh model relating the reduction in signal fluctuation to the bandwidth used provides a reasonable estimate for the improvement provided by frequency averaging

Keywords

electromagnetic wave scattering; geophysical techniques; radar applications; radiowave propagation; remote sensing; 34 to 36 GHz; 35 GHz; EHF; Rayleigh fading model; asphalt; backscattering; bandwidth; bistatic; distributed targets; frequency averaging; land surface; measurement; millimetre radiowave; mm wave; radar scattering; remote sensing; scattering; signal fading variations; snow-covered ground; technique; terrain; Asphalt; Backscatter; Bandwidth; Fluctuations; Frequency estimation; Millimeter wave radar; Radar scattering; Rayleigh channels; Rayleigh scattering; Statistics;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.3030

Filename

3030