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基于高阶谱的声压梯度声源定向
引用本文:刘勋,相敬林,张效民,沈远海.基于高阶谱的声压梯度声源定向[J].兵工学报,2001,22(2):222-225.
作者姓名:刘勋  相敬林  张效民  沈远海
作者单位:西北工业大学航海工程学院,陕西西安,710072,船舶系统工程部三分部
基金项目:国防科技预研基金;98JC.3.4.HK0304;
摘    要:声压梯度法用于声源的定向是一种新方法.该法对声源定向既存在系统误差(确定性误差),又存在随机误差.本文研究了在高斯随机干扰噪声下,非高斯信号声源的基于高阶谱的随机误差消除方法,应用高阶谱对高斯噪声的不敏感性,由此可以消除高斯噪声的影响.仿真结果验证了该方法的有效性.

关 键 词:高阶谱  声压梯度  声源定向  干扰噪声
修稿时间:1999年9月1日

DETERMINATION OF BEARINGS OF SOUND SOURCE WITH SOUND PRESSURE GRADIENT BASED ON HIGHER ORDER SPECTRA
Liu Xun,Xiang Jinglin,Zhang Xiaomin.DETERMINATION OF BEARINGS OF SOUND SOURCE WITH SOUND PRESSURE GRADIENT BASED ON HIGHER ORDER SPECTRA[J].Acta Armamentarii,2001,22(2):222-225.
Authors:Liu Xun  Xiang Jinglin  Zhang Xiaomin
Abstract:Determination of the bearings of sound source with the sound pressure gradient is a new method put forward by the authors The method has system errors(determinate errors)and random errors A method based on higher order spectra is proposed to reduce the random error when the interfering noise is Gaussian while the source signal is non Gaussian As a result of the non sensitivity of higher order spectra to the Gaussian noise, the detrimental effects of interfering noise can be suppressed Simulation results show the effectiveness of the new method
Keywords:higher order spectra  sound pressure gradient  determination of sound source bearing  interfering noise
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