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Multistatic scattering from moving targets in multipath environments

We are examining the feasibility of ground target detection and tracking in urban centers using ground moving target indicator (GMTI) radar when line-of-sight (LOS) coverage is intermittent, yet multipath responses from building walls are available. We enhance the standard ray-tracing propagation methods that assume specular wall reflections and point scattering target models. Our two-dimensional analysis includes near field reradiation from the illuminated wall to a target having a multistatic response. We also evaluate the degradation of power and coherency in the signal processing due to wall surface roughness. Results of this work provide insight for the development of processing techniques that may be required for multipath exploitation radar.