A novel frequency discrimination method based on all phase FFT for anti-towed decoy

This paper proposes a novel frequency discrimination method and discusses its application on anti-towed decoy. Before describing the proposed method, the principle of all phase FFT is first introduced. Then, based on the property of phase invariant, a novel frequency discrimination method based on all phase FFT is presented. Furthermore, the performance is specifically analyzed via numerical experiments to demonstrate the advantages of all phase FFT. Compared with the conventional method, the proposed method has higher frequency resolution and is more suitable for distinguishing the target from the towed decoy. Simulation results verify the validity of the proposed method and show the good performance in anti-towed decoy jamming.