Long-range target localization with passive flank array of unmanned underwater vehicle

In order to enhance the capability of long-range target localization with passive flank array of unmanned underwater vehicle(UUV) in complex shallow water,a method of passive localization based on data fusion of synthetic aperture technology and matched field processing was presented.The method involves spatial resolution improvement by synthesizing virtual long sonar array and target localization by exploiting complicated ocean environment.The algorithm and performance were studied by theoretical analysis and numerical simulation.Simulation results show that the good location performance for long-range immobile target is attained under the condition of low speed cruise.The research results provide theoretical foundation and research methods for passive localization system design of UUV flank array.