匹配场高精度测向技术在海底线列阵中的应用研究

Research on High-accuracy Bearing Estimation of Matching Field Based on Linear Array Buried in the Seafloor

匹配场测向技术充分分析了海洋环境时空变化的复杂性和声场空间分布并加以利用,能够对水下目标进行匹配定位,由此将海洋波导中的声传播理论和信号处理技术有机结合在一起。论文研究了128元海底线列阵针对不同目标的匹配场测向性能,分析了不同声源级目标的测向精度。通过仿真分析和试验验证表明,匹配场高精度测向技术在海底线列阵测量系统中有很好的应用前景。

The matching field direction finding technology fully analyzes the complexity of the temporal and spatial variation of the marine environment and the spatial distribution of sound field and makes use of it, which can match and locate underwater targets, thus organically combines the sound propagation theory and signal processing in the ocean waveguide. In this paper, the direction finding performance of 128 element submarine line array for different targets is studied, and the direction finding accuracy of targets with different sound source levels is analyzed. The simulation analysis and experimental verification show that the matching field high precision direction finding technology has a good application prospect in submarine line array measurement system.