A depth discrimination method based on the scintillation of frequency domain

Abstract An innovative algorithm of target depth discrimination suitable for passive horizontal array in shallow sea is discussed this paper. Based on the idea modal scintillation theory, a new method high calculation speed proposed by analysing commonness between frequency domain energy low-frequency broadband signals and excitation. This avoids mode decomposition signals, greatly reduces complexity, improves stability, has fast can perform real-time judgment. In paper, principle derived detail theoretical aspect, then simulated environment to verify its effectiveness, influence different influencing factors performance explored. At same time, verified actual experimental data achieves good results, indicating that certain practical application value domain.