基于声呐波束锐化的定向算法研究

Research on Orientation Algorithms Based on Sonar Beam Narrowing

为了提高声呐系统的精准定向能力,本文提出一种超波束锐化技术在声呐定向中的应用,首先简要介绍常规声呐波束形成算法的分析,然后提出一种分裂波束定向算法在水下阵列信号处理中的应用,依据仿真数据结果给出改变超波束指数对超波束锐化算法主瓣宽度的影响,并给出超波束锐化算法对多个不同强度目标定向的准确性,通过在0°与45°的仿真和数据分析,结果表明与常规波束形成算法相比,其主瓣宽度更窄、幅度更高,测向分辨能力有较大提高,是一种具有工程应用价值的水下阵列信号处理新方法。

In order to improve the precision orientation ability of sonar system,this paper presents a new application of hyper-beam narrowing technology in sonar orientation.Firstly,the analysis of conventional sonar beam-forming algorithm is briefly introduced.Then a split-beam orientation algorithm is proposed for under-water array signal processing.The influence of changing the hyper-beam index on the width of the main lobe of the hyper-beam sharpening algorithm is given by simulation.The accuracy of the hyper-beam sharpening algorithm for multiple target orientation is also given.The simulation and data analysis at 0 and 45 degrees show that the main lobe width is narrower and the resolution is much higher than the conventional beam-form-ing algorithm.It is a kind of engineering application.A new method of underwater array signal processing is presented.