Active Measurement of Torpedo Missdistance Based on Electromagnetic Fuze

Torpedo missdistance is usually measured via passive ranging methods with inconvenient operation, compli-cated solution model and low measuring precision. In this paper, an active measuring method of torpedo missdistance is put forward based on electromagnetic fuze. The ranging principle of electromagnetic fuze is analyzed, the solution model of phase characteristic and missdistance is set up, and the numerical solution process of missdistance is given. In addition, a tank experiment is conducted. The measured data indicate that the absolute ranging precision is less than 0.02 m, and the relative ranging precision is less than 2.5% when the distance from transmitting/receiving antennas to target (steel plate) is within 0.8~1.5 m, which demonstrates high measuring precision and simple implementation of the pro-posed method.