声纳浮标对空中声源干扰的抑制方法研究

摘要

The airborne deployment platform of sonobuoy has similar noise characteristics with underwater target. The suppression of helicopter noise interference is researched with adaptive signal processing technology. The helicopter aerial noise and combined vibration velocity are respectively used as reference signal,and the least mean square(LMS)principle is chosen to offset the self-adaptively interference. The simulation result indicates that taking combined vibration velocity as reference signal may effectively suppress the helicopter noise in high-velocity motion.%声纳浮标的空中布放平台具有与水下目标相近的噪声特性。应用自适应信号处理技术对空中直升机噪声干扰抑制问题进行了研究。分别以直升机空中噪声和组合振速为参考信号，选择基于最小均方误差（LMS）准则进行自适应干扰抵消。仿真分析表明以组合振速为参考信号可以有效抑制高速运动直升机的噪声。