ESTIMATION OF X-BAND SCATTERING PROPERTIES OF TREE COMPONENTS.

D. E. Pitts; G. D. Badhwar; E. Reyna; R. Zoughi; Lin-Kun Wu; R. K. Moore

ESTIMATION OF X-BAND SCATTERING PROPERTIES OF TREE COMPONENTS.

D. E. Pitts^*, G. D. Badhwar, E. Reyna, R. Zoughi, Lin-Kun Wu, R. K. Moore

^*Corresponding author for this work

Institute of Communications Engineering

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

An X-band FM-CW very-fine range resolution scatterometer was used to acquire backscattering data for a number of tree species. Using a model to describe the scattering source function, d sigma /dR equals f( eta , mu a), and an experimental procedure for selected removal of plant parts, allows the excitation of eta , the volume backscatter coefficient, and mu a, the volume estinction coefficient. It is found that: (1) leaves are strong attenuators as well as scatterers; (2) the albedo, omega equals eta / mu a, at a given angle of incidence, is nearly independent of the tree type; (3) the tree limbs are good attenuators but rather poor scatterers; and (4) the albedo changes as a function of the angle of incidence and for deciduous trees is also a function of the season.

Original language	English
Pages	1493-1498
Number of pages	6
State	Published - 1 Jan 1987

Cite this

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title = "ESTIMATION OF X-BAND SCATTERING PROPERTIES OF TREE COMPONENTS.",

abstract = "An X-band FM-CW very-fine range resolution scatterometer was used to acquire backscattering data for a number of tree species. Using a model to describe the scattering source function, d sigma /dR equals f( eta , mu a), and an experimental procedure for selected removal of plant parts, allows the excitation of eta , the volume backscatter coefficient, and mu a, the volume estinction coefficient. It is found that: (1) leaves are strong attenuators as well as scatterers; (2) the albedo, omega equals eta / mu a, at a given angle of incidence, is nearly independent of the tree type; (3) the tree limbs are good attenuators but rather poor scatterers; and (4) the albedo changes as a function of the angle of incidence and for deciduous trees is also a function of the season.",

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AU - Pitts, D. E.

AU - Badhwar, G. D.

AU - Reyna, E.

AU - Zoughi, R.

AU - Wu, Lin-Kun

AU - Moore, R. K.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - An X-band FM-CW very-fine range resolution scatterometer was used to acquire backscattering data for a number of tree species. Using a model to describe the scattering source function, d sigma /dR equals f( eta , mu a), and an experimental procedure for selected removal of plant parts, allows the excitation of eta , the volume backscatter coefficient, and mu a, the volume estinction coefficient. It is found that: (1) leaves are strong attenuators as well as scatterers; (2) the albedo, omega equals eta / mu a, at a given angle of incidence, is nearly independent of the tree type; (3) the tree limbs are good attenuators but rather poor scatterers; and (4) the albedo changes as a function of the angle of incidence and for deciduous trees is also a function of the season.

AB - An X-band FM-CW very-fine range resolution scatterometer was used to acquire backscattering data for a number of tree species. Using a model to describe the scattering source function, d sigma /dR equals f( eta , mu a), and an experimental procedure for selected removal of plant parts, allows the excitation of eta , the volume backscatter coefficient, and mu a, the volume estinction coefficient. It is found that: (1) leaves are strong attenuators as well as scatterers; (2) the albedo, omega equals eta / mu a, at a given angle of incidence, is nearly independent of the tree type; (3) the tree limbs are good attenuators but rather poor scatterers; and (4) the albedo changes as a function of the angle of incidence and for deciduous trees is also a function of the season.

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ER -

ESTIMATION OF X-BAND SCATTERING PROPERTIES OF TREE COMPONENTS.

Abstract

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