A study of scattering from a dielectric object located above a half space i
s performed to clarify the accuracy of a "four-path" model which includes s
ingle scattering effects only. An iterative method-of-moments solution is u
sed for comparison, and both frequency- and time-domain examples are illust
rated to clarify the scattering interactions which occur. (C) 2001 John Wil
ey & Sons, Inc.