%0 Journal Article
%T 基于恒定束宽波形保真及干扰抑制的水下目标识别方法<br>Underwater Target Recognition Based on Constant-Beamwidth Waveform Fidelity and Interference-Suppression
%A 吴姚振
%A 杨益新
%A 杨龙
%A 王永威
%J 西北工业大学学报
%D 2015
%X 水下目标辐射噪声通过阵列波束形成后易造成波形失真,且受干扰的影响,严重降低了目标的识别效果。为此提出了恒定束宽波形保真及干扰抑制的水下目标识别方法。该方法通过二阶锥规划方法设计恒定束宽波束形成器,用以实现波形保真并滤除干扰源的影响,结合人耳听觉感知机理和经典的DEMON分析,提取出有效反映目标类别属性的联合特征矢量。针对直线阵,利用单水听器获得的真实目标辐射噪声,仿真了干扰条件下阵列输出信号并开展识别实验,结果表明所提出的水下目标识别方法可以有效实现目标的准确分类,且对目标形态有着良好的宽容性。<br>In the presence of interference, the recognition performance of underwater target radiated noise severely degrades due to waveform distortion after array beanforming. Based on constant-beamwidth and interference-suppression, a new method of underwater target recognition algorithm is proposed to improve the fidelity of waveform in this paper. In this method, the second-order cone programming (SOCP) is exploited to deal with signal distortion of broadband constant-beamwidth beamforming. Combining SOCP with auditory filtering techniques, we extract intrinsic features of the targets to effectively distinguish them from each other. Based on array signal simulated from the ship-radiated noise collected by a hydrophone, the results and their analysis demonstrate preliminarily the effectiveness of the proposed algorithm in target classification
%K 恒定束宽
%K 干扰抑制
%K 水下目标识别
%K 特征提取
%K DEMON分析
%K 二阶锥规划&lt
%K br&gt
%K array processing
%K backpropagation algorithms
%K beamforming
%K computer simulation
%K discrete Fourier transforms
%K efficiency
%K feature extraction
%K filter banks
%K hydrophones
%K interference suppression
%K target tracking
%K constant beamwidth
%K DEMON analysis
%K second-order cone programming (SOCP)
%K underwater target recognition
%U http://journals.nwpu.edu.cn/xbgydxxb/CN/abstract/abstract6402.shtml