Method to extract three dimensional scattering centers based on a super-resolution algorithm

Aiming at the turntable-arc-orbit measurements method, a super-resolution algorithm for the 3-D scattering centers extraction is presented based on the 2D MEMP method. The method estimates the signal parameters correctly by utilizing the structure of a Hankel matrix and the space invariance technology, and needs no additional pairing step. The numerical simulations of a cube model with 8 scattering centers in its vertex indicate that the method estimates the parameters correctly and is much robust to noise. The method is further extended to the N-dimensional case and a general expression for estimation is given.