A Passive Positioning Method of Attacking Submarine Terminal Trajectory of Rocket-assisted Torpedo

To effectively measure the terminal trajectory of a rocket-assisted torpedo attacking submarine, a passive positioning method based on the broadside array of submarine is presented. The composition and function of the measurement system are introduced, the target passive positioning algorithm is proposed, and the error in the measurement area is simulate to obtain the absolute and relative errors distribution map. Simulation shows that under the maximum angle measurement error of 0.3°, the measuring accuracy reaches 1% oblique distance in the range of submarine transverse angle ± 60° and in the area of target distance 65 m. This method may provide a reference for the overall design and measurement data processing of the passive terminal trajectory measurement system.