水下动态目标回波特性研究

Underwater Moving Target Echo Characteristic Research

水下动态目标回波特性研究在水声研究中有很重要的作用。对声纳设备的研究、设计、测试和校准中具有重要的指导意义。本文通过研究目标回波信号模型理论,结合实际情况选择了窄带信号模型;对复杂的回波脉冲进行时间展宽;并对目标体进行圆柱体简化,结合目标强度理论得到了近场时目标强度的计算公式;最后推导了动态目标回波的理论。本研究对实际工程应用具有一定的指导意义。

Underwater moving target echo characteristie research is important in acoustic research. It has guiding significance in the area of sonar equipment research, design, testing and ealibratiun. In this paper, we research model theory of target echo signal. Considering the actual situation,we choose the narrowhand signal model. Because the complex echo path,we spread the pulse width. We simplify the target into the cylinder,and deduce the near field target strength calculation formula. Last, we get the theory of dynamic target echo. This