Analysis and Solution of Passive Homing Problem for Lightweight Torpedo

To solve the problem that passive homing of lightweight torpedo can not pursue target in sea trial, the fault in sea trial and the torpedo performance were analyzed and compared. It was found that the built-in electric interfere and the abnormal opening of amplitude gate resulted in not pursuing target and losing target in the passive pursuing process. Therefore, such measures as adjusting the related coefficient of receiver, adding an inductance in power supply circuit of transmitter, and increasing the width of passive amplitude discrimination were taken. The trial results show that these measures can improve the function of passive detection to meet the requirements for passive homing pursuit and homing range, and can simultaneously improve active detection of homing torpedo.