Estimation of X-Band Scattering Properties of Tree Components
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.
D. E. Pitts et al., "Estimation of X-Band Scattering Properties of Tree Components," Proceedings of the International Geoscience and Remote Sensing Symposium (1987, Ann Arbor, MI), pp. 1493 - 1498, Institute of Electrical and Electronics Engineers (IEEE), May 1987.
International Geoscience and Remote Sensing Symposium (1987: May 18-21, Ann Arbor, MI)
Electrical and Computer Engineering
Keywords and Phrases
Microwaves - Spectrum Analysis; Tree Components; X-Band Scattering Properties; Forestry
Article - Conference proceedings
© 1987 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 May 1987