A geometrically based multipath channel model for passive radar

The presence of multipath on the signals of opportunity used by passive radar can have a significant impact on their performance. Therefore, the availability of meaningful and representative models for the multipath environment experienced by a passive radar is an important element for both the development of appropriate signal processing techniques and for a reliable performance assessment. A geometrically based multipath channel model for passive radar is derived in this paper, that is able to account for different scenarios in terms of both transmitter and receiver antenna location. The derived model is used as the basis for a channel simulator, that is described in this paper, that allows to evaluate the realistic performance of passive radar systems.