An optimal sub array partitioning method based on directed graph path search

Based on the division or partition of sub array of airborne early warning (AEW) radar, a new method for the partition of the sub array is proposed, which is based on the path search of the directed graph. Under the condition that the number of sub array is given, to maximize the improved factor of sub array level STAP and the lowest side-lobe are the optimization criterion, which is used to search the optimal sub array. Finally, comparing research with other methods is also presented, and the simulation results demonstrate the efficacy of the proposed methods.