Radar coincidence imaging with array position error

As a novel staring imaging technique, radar coincidence imaging (RCI) shows great potentials in various applications. However, the array position error, exists in array radar generally, has a bad influence on RCI and impairs the imaging performance extremely. In this paper, the mathematical model of RCI in the presence of array position error is established and to obtain the analytic result, the nonlinear relationship between the received signal and array position error is approximated linearly by the first-order Taylor expansion. Thus, the alternating iterative imaging algorithm is designed to compensate the array position error based on basis pursuit. Simulation results are presented to show the effectiveness of the proposed algorithm.