Multiple reflections in SAR images of business districts

摘要

In this paper we model those features on a SAR image that are related to "multiple interactions" between different buildings, a phenomenon typical of urban areas characterized by tall and/or closely spaced buildings. We employ a set of conditions, as function of the distance between two subsequent buildings, to verify the occurrence of multiple reflections. We use a deterministic approach to calculate the amplitude value of multiple reflections and determine their position in an azimuth-slant range plane; the used method takes into account the geometric and electromagnetic characteristics of man-made structures. Our method is conceived to model and work with a single high-resolution SAR image of an extended area.