Radar backscatter model of a defoliated forest using log-periodic antenna array technology

A backscatter model is described for a defoliated forest. The forest is idealized as a two-layered (branch and trunk) medium above a rough interface. A log-periodic antenna array analogy is used to model the branch medium which enables the computation of the forest backscattering coefficient /spl sigma//sup 0/. The influence of branch scattering to the total backscattering from the forest stand has been demonstrated.