一种水下目标尺度特征无源模拟优化方法

摘要

针对接收应答式水下目标尺度模拟方法对抗主动声引信的不足,提出了利用角反射器线列阵模拟潜艇声反射尺度特征的方法.首先,建立了基于反射器阵的模拟潜艇声反射模型,给出了从目标声反射总强度、亮点分布及尺度特征等方面模拟潜艇尺度特性的实现方法;然后,进行了对抗主动声引信的验算;最后,为增大反射器阵有效反射范围并避免反射盲区,提出了利用多格错位反射器构建反射阵的优化方法,并设计了四格错位反射器单元,该单元显著扩大了有效反射范围并避免了盲区,提高了该方法的有效性.%To overcome the weakness of respondent method of simulating measure characteristic of underwater object against the characteristic of active fuse,a new method of simulating acoustic echo characteristic of submarine is put forward by using corner reflector.First,a mathematical model of simulating acoustic echo characteristic of submarine based on corner reflector is built,and a simula-ting method is proposed concerning total strength,highlight distribution and measure characteristic. Then,the primary validity is verified.Finally,for the purpose of increasing echo range and avoiding unable echo range,an optimization method of constructing echo array by using stagger corner reflector is put forward.Stagger corner reflector with four grids is designed and the aim of increasing echo range and avoiding unable echo range is achieved,which proves that the method is effective.