Design of Torpedo Wake Homing System for Higher Trajectory Accuracy

Three key problems in wake homing design are analyzed theoretically to improve the accuracy of torpedo trajectory. Firstly, a new method for forming wake detection sign by comparing the cumulantion in a time period is presented to solve the inaccurateness caused by the randomicity of wake. Secondly, the orientation and the width of the wake a re calculated by using the coordinates of the points w here torpedo entering and leaving the wake, thereby the torpedo can run following the wake orientation with simpler and more effective way than the conventional methods. Finally, the effect of the wake break on guidance and trajectory is introduced, and the corresponding technique to avoid the misguidance is presented. Analysis results show that the present scheme can improve the accuracy of trajectory guidance.