水下目标声学探测识别初步实验研究

Preliminary Experiments of Acoustic Detection and Recognition of Underwater Target

介绍了水下目标三维成像技术及基本原理,根据目标回波亮点模型,设计出线性换能器阵列系统;该系统发射一次声波就可以获取包含水下目标信息的一系列二维回波信号,再由计算机处理回波信号合成目标的三维声学图像.其次,分析了刚性目标和柔性目标的回波散射强度的差别.实验结果表明,目标回波亮点模型在实际应用中切实可行,为声纳目标识别等方面的研究提供支持.

Introduce underwater 3-D imaging technology and basic principle,it designed a linear transducer array system according to echo highlight of model in this paper;the system can receives a series of echo signals about underwater target by transmitting acoustic signal,then the echo signals are produced by computer and compose 3-D acoustic image of target.Second,it analyzed the difference of echo scattering intensity of rigid-target and non-rigid target.The experiment results show that the model of echo highlight was practicable and can be used in some practical situations.