Research On Target Detection And Effectiveness Evaluation In ATT Cooperative Combat

With the country’s call to build a "marine power",the demand for improving maritime combat capabilities under the new situation has become more urgent.In the process of anti-torpedo torpedo(ATT)coordinated operations,the strength of detection capabilities and the choice of coordinated shooting methods have an important impact on the ultimate interception effectiveness.Among them,detection is the prerequisite for ATT’s coordinated operations.ATT starts to guide and attack the target after detecting the target.Predict the effect of combat before executing the action,and adjust it in conjunction with the decision-making algorithm to make the combat effect the best.In addition,after the combat operations are over,the effectiveness of combat operations needs to be evaluated to provide a basis for weapon design and use rules,and the formulation of combat plans.Based on the above ideas,this paper studies the moving target detection algorithm and effectiveness evaluation algorithm in ATT cooperative combat.This article first studies the moving target detection algorithm in ATT cooperative combat.The echo signal of the moving target has obvious Doppler effect,channel influence and low signal-to-noise ratio.It completes Doppler compensation,environmental correction matched filtering(ECMF)based on channel estimation,and frequency domain auto-sensing based on matched filtering.Research on the technology of adaptive line enhancement(frequency-domain adaptive line enhancement method based on matched filter,FDAMF).In the second chapter,the fractional Fourier transform(FRFT)theory and the FRFT-based Doppler compensation method are studied for the Doppler echo signal matching distortion problem,and the FRFT-based Doppler is verified through the field test data.The feasibility and effectiveness of the compensation algorithm.In the third chapter,the pre-and post-processing algorithms based on matched filters are studied,namely ECMF and FDAMF algorithms.First of all,in view of the influence of multi-channel channels in the process of underwater signal propagation,this paper studies two channel estimation algorithms,and finally selects the channel estimation algorithm based on Wiener deconvolution to study the matched filtering algorithm based on environmental correction through comparative analysis.The effectiveness of the algorithm is verified by field test data.Afterwards,in order to solve the problem of low signal energy output of traditional matched filtering algorithms under lower signal-to-noise ratio,the adaptive line spectrum enhancement technology based on matched filtering was studied,and several adaptive algorithms were analyzed and compared in the adaptive line spectrum.The performance under enhancement is verified by field test data to verify the effectiveness of the algorithm.Based on the research of moving target detection algorithm,this paper has completed the research of effectiveness evaluation based on target detection performance in ATT cooperative combat.Firstly,it conducts theoretical analysis on WSEIAC(Weapon System Effectiveness Industry Advisory Commission)algorithm,and then analyzes the single-mine shooting solution model.Based on the research on ATT coordinated shooting trajectory and ATT guidance method,the conditions for determining successful interception are finally determined.The effectiveness of the method is verified by the simulation analysis of the effectiveness evaluation content studied in this paper,and the study found that with the increase of the ATT acoustic fuze’s range and detection range,the interception effectiveness has been significantly improved.