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舰艉拖曳声纳的鱼雷对抗系统由一对被动拖曳直线阵的战术探测装置组成,主要用于探测舰船艉部的来袭鱼雷及鱼雷攻击弹道。探测装置拖曳于水面舰尾流下面,它包括了由传感器阵元组成的园拱形基阵,阵元安装于具有低自噪声、横滚、俯仰及偏航姿态都稳定的平台上。被动声纳形成预成形多波束,具有预定波束宽度的多波束相互重叠,从而可覆盖舰船艉部区域并检测是否有来袭鱼雷。信号处理装置监控每个波束的输出功率级并检测攻击鱼雷的存在及鱼雷弹道,从而采取适当的措施及时有效地摧毁鱼雷。
The towed sonar’s torpedo countermeasure system consists of a pair of passive towed linear array tactical detection devices, mainly used to detect the incoming torpedo and torpedo attack trajectory of the ship’s bow. The probe is towed below the surface of the waddle stream and consists of a circular dome array of sensor elements mounted on a stable platform with low self-noise, roll, pitch and yaw attitude. Passive sonar forms a preformed multi-beam, multi-beams with a predetermined beamwidth overlap each other, covering the ship’s bow area and detecting the presence of a torpedo. The signal processing unit monitors the output power level of each beam and detects the presence of torpedoes and the torpedo trajectory, so that appropriate measures can be taken to destroy the torpedo in a timely manner.