An imaging simulation method of SAR based on anisotropic fBm

SAR simulation imaging may be useful for several purposes, and this paper focuses on the use of SAR image simulation for accuracy analysis of image aid navigation in natural scene. However, natural scenes are more complicated including randomly and anisotropic distributed. So the anisotropic fBm interpolation mold was proposed via improving fBm method for obtaining a more accurate matrix of the DEM data. On the basis of high-resolution DEM data, an approach was presented to SAR imaging simulation for comprehensive scenarios, which takes account scattering, shadowing and the layover. In the simulation experiment, this algorithm was successfully implemented on producing SAR simulation imaging, and can satisfy the requirements of accuracy analysis in SAR aid navigation system.