Numerical Analysis on Active Acoustic Homing Performance of Anti-Submarine Torpedo under the Action of Noise Jammer

To reveal the effect of high-frequency noise jammer on active acoustic homing performance of anti-submarine torpedo, models of active acoustic homing and high-frequency noise jammer are established considering acoustic per-formance of submarine. The effect of the jammer at different relative azimuths and initial distances, as well as the homing performance of anti-submarine torpedo under high-speed steering evasion, is numerically analyzed by using the separate variable method. Results show that: 1) the interference effect of the high-frequency jammer is enhanced with the decrease of the absolute value of its relative azimuth and the initial distance, and the homing distance of the anti-submarine torpedo is hence reduced; 2) submarine adopting high-speed reverse-direction maneuvering evasion after release jammer will further reduce the homing distance of the torpedo, but will not change the interference sector of the jammer. This research may provide a basic model and data support for operational effectiveness analysis of anti-submarine torpedo.