Multiple Off-grid Targets Localization Based on Grid Evolution Method

摘要

In recent years, off grid methods have been used in localization for radar system. These methods can estimate parameters with higher precision but a dense initial grid is still required. Or they may wrongly estimate the number of targets. In this paper, localization problem is solved based on grid evolution method. By using this method, the grid is non-uniformly evolved from coarse to dense. Off-grid multiple targets are associated with different grid points based on this evolved grid. This framework is more accurate and has higher resolution power compared with conventional radar signal processing framework. Simulation results are provided to verify the superiority of the proposed framework.