Solution Principle and Simulation Analysis on Trajectory Dispersion of Incoming Torpedo

Abstract

It is an important basis for planning torpedo-defense-strategy of surface-ship to obtain the motion parameters of incoming torpedo. According to the torpedo defense characteristics,the principle of solving target-motion-parameters was analyzed based on 2B1D1V(two-bearings,one-distance and one-velocity)model. According to the short time-bearing series coming from torpedo warning towed sonar in surface ship,the simulation and explanation were given by use of 2B1D1V model. The 3B1D(three-bearings and one-distance)model and DBA(distance-bearing adjustment)model were compared with 2B1D1V model. The simulation data of 2B1D1V model were fitted,and the solving rules of torpedo trajectory dispersion were analyzed based on convergence rate. The research proves that the 2B1D1V model can satisfy the need of torpedo defense of surface ship to a certain extent.