A novel strategy of 3D imaging on GEO SAR based on multi-baseline system

Three dimensional (3-D) synthetic aperture radar (SAR) image formation provides the scene reflectivity estimation along azimuth, range and elevation co-ordinates. For 3-D image focusing multiple signals, acquired along different orbits, are required. In order to obtain the tomographic resolution, this paper apply a novel strategy into geosynchronous synthetic aperture radar (GEO SAR), which allow generating 3-D images, which for each azimuth and range position provide an estimation of the scatters distribution along the elevation direction. In this way, a multi-baseline geosynchronous synthetic aperture radar model is used for several multi-pass acquisitions on the same scene. Experimental results on simulated data show the good performance of the method.