3D ISAR imaging based on MIMO radar array

In 3-D ISAR imaging, the separation of scatterers which have same Range-Doppler location is a key problem. In this paper, we propose to use a MIMO radar array, which is located in the z-axis direction, to measure the positions of scatterers of a synthesis scatterer. The x- and y-coordinates of scatters are obtained from ISAR image directly. The z-coordinates are reconstructed by the spatial frequencies of scatterers in each synthesis scatterer based on the MIMO radar array. The simulation results show that the proposed method is effective for 3-D image reconstruction.