实测宽带阵列流形快速获取方法  

A Method for Quickly Acquiring Maniflod of Measured Broadband Array

作　　者：郭涛[1] 吴亚军[1] 

机构地区：[1]驻西安东风仪表厂军代室,陕西西安710075

出　　处：《鱼雷技术》2011年第4期268-270,306,共4页Torpedo Technology

摘　　要：针对传统阵列流形获取方法在宽带阵列流形获取中测试时间长和信号处理复杂的缺点,提出了基于快速傅里叶变换(FFT)的实测宽带阵列流形的快速获取技术,该技术结合实际水下声接收基阵,由测量数据得到实测阵列流形,进而利用此实测阵列流形进行波束形成,并通过仿真数据和实测数据对比研究了该方法的可行性和有效性。与传统实测阵列流形的获取方法相比,该方法具有测量快速、运算简单等特点。试验结果表明,该方法对于宽带声学基阵的波束优化和实测流形具有重要的工程应用价值。A rapid acquirement method of measured broadband array based on fast Fourier transform （FFT） is proposed to shorten the measurement time and simplify the signal processing during the acquirement period. Combining underwater receiving acoustic array, broadband array manifold is obtained from measured data, and beamforming is hence completed by using the array manifold. Comparison of measured data and simulation data verifies the feasibility and effectiveness of the method. Experimental results show that this method has the advantages of faster measurement and simpler calculation than the conventional method, and can be applied to beam optimization and manifold measurement of broadband acoustic array.

关 键 词：宽带阵列 声学基阵 快速傅立叶变换 信号处理 波束优化 阵列流形 

分 类 号：TJ630.34[兵器科学与技术—武器系统与运用工程] TN911.23[电子电信—通信与信息系统]