The Study Of Multi-array Information Fusion Technique Based On Multi-everything Sonar Simulation

Multi-everything sonar system simulation is the simulation upon the working performance of sonar under the influence of sound field environment driven by a series of dimensions including environment,target,background and receiving process.This essay was themed with the research of the real-time simulation of multi-everything sonar simulation system in virtual ocean environment.It not only realized software function simulation but also reflected operational performance of sonar system under different tactical situations,underwater environments and various kinestate through combination with display technique.To improve the reliability and detection accuracy of the system as well as increasing the coefficient of utilization of the system information,data from multi-array sonar were dealt with through data fusion technique.As the output information of multi-everything sonar is related with underwater environment as well as the performance of observation platform devices,it is more practical to conduct data fusion using detected information based on panoramic sonar modeling as the input signal of multi-sensor data fusion.Theoretical research into multi-sensor data pretreatment,data association and data fusion methods was done aimed at all sections of multi-sensor target tracing and data fusion technique.Data pretreatment is the preparatory phase of data fusion,including data alignment and aberrant point elimination.Simulation analysis was also done toward aberrant point elimination algorithm.Next,comparitional analysis was done upon the performance of target tracing and data fusion of single-platform-multi-array-single-target and single-platform-multi-array-multi-target situations on nearest neighbor algorithm and probabilistic data association algorithm through simulation experiments.Finally,single-platform-multi-sensor target tracing and fusion technique was expanded to multi-platform-multi-sensor target tracing and data fusion technique.Simulation processing of fused data from two platforms was done through weighed fusion technique,and sonar data fusion performance supported by multi-everything sonar system simulation was also tested.