Bistatic clutter modelling
This chapter addresses the study of the properties of bistatic clutter, compared with monostatic with a particular focus on recent results from analysis of real sea clutter data. Clutter is usually defined as the unwanted radar returns from land, sea, rainfall or other phenomena, which may mask the echoes from targets, and its models usually reproduce the normalized radar cross section, spatial and temporal correlation properties, statistical variability and Doppler spectrum. Such models are important in order to develop target detection techniques and evaluate their performance under variable environmental conditions. The properties of monostatic clutter are influenced by radar parameters - i.e. frequency, resolution cell size, incidence angle and polarization - and environmental conditions. In the case of sea clutter, important environmental parameters are: wind and wave direction, level of development of the sea and depth of the sea. On the other hand, bistatic clutter is heavily influenced by the system geometry, i.e. the relative position of the radar receivers with respect to the transmitters, resulting in new degrees of freedom to include in future models.
Bistatic clutter modelling, Page 1 of 2
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