声纳目标模拟器回波信号的数学模型

The Mathematical Model of Sonar Target Simulator

介绍复杂传感器阵列回波信号的数学建摸问题。所讨论的传感器阵列是一个具有多层结构的体积阵，根据该阵列的工作特性，通过解析和归纳相结合的方法构造出了它的混合模型，同时通过分析、推理建立起其机理模型。对这两种模型进行仿真、分析，最后确认：影响大型复杂传感器阵列信号的因素很多，也很复杂，难以作出解析表达。机理建模不能正确反映该系统的本质属性，混合模型较适用于复杂传感器阵列。

This paper introduces the echo model of the complex array which is three-dimensional and has a poly- laminate structure. According to the operational features of the array, a mixed model is established by combining the analytic method with induction. Besides, the theoretical model is also deduced by adopting the analytic and inference methods. The simulation and analysis of the two models lead to the conclusion that there are many factors affecting the echo signal of a complex array and some factors are too complex to get the analytic expression. So the theoretical model can not represent the essential property of this system. The mixed model is shown to be suitable to the complex array.