A Bistatic SAR Image Intensity Model for the Composite Ship–Ocean Scene


Based mostly on the scattering mechanisms of multipath, a bistatic synthetic aperture radar (Bis-SAR) image intensity model for the composite ship–ocean (or different metallic targets with ocean) scene is developed in this paper through reasonably managing the trail lengths of transmitter and receiver to the ship target. To get a Bis-SAR image intensity model for the composite ship–ocean scene, the Bis-SAR image intensity distribution for the ocean surface is analyzed, and also the facet scattering model is employed to grant the individual returns from separate sides. In addition, the influence of velocity bunching (VB) modulation of long ocean waves on the distribution of radar cross section is also mentioned. Finally, Bis-SAR imagery simulations of ocean wave and the composite ship–ocean scene are illustrated, and the results show that the proposed Bis-SAR image intensity model can be reasonable and also the interaction effects between the ship and sea surface can make significant contributions to the Bis-SAR intensity.

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