平面阵声源方位角估计扰动敏感性分析
发布时间：2018-07-14 18:46
【摘要】：针对实际小型声测节点阵列方案和测向性能的定量分析需求,通过推导任意平面阵远场声源方位角估计误差上界,明确了方位角估计扰动敏感因子的4个影响要素及其物理含义,证明了增加阵元对数量和采用阵元各向均匀分布等措施能有效降低声源定向算法对阵元间波达时间差估计的扰动敏感性.比较分析与数值结果表明,该分析方法能够定量评估和比较不同平面阵方案的方位角估计性能.
[Abstract]:In view of the quantitative analysis requirements of the actual small acoustic array scheme and direction-finding performance, the upper bound of the azimuth estimation error of the far-field sound source of an arbitrary plane array is derived. The four factors and their physical meanings of azimuth estimation of disturbance sensitivity factor are defined. It is proved that increasing the number of array elements and adopting uniform distribution of each direction of array elements can effectively reduce the disturbance sensitivity of the acoustic source orientation algorithm to the estimation of time difference of arrival between elements. The comparative analysis and numerical results show that the proposed method can quantitatively evaluate and compare the azimuth estimation performance of different planar array schemes.
【作者单位】： 南京理工大学电子工程与光电技术学院;
【基金】：国家自然科学基金资助项目(61171167,61401203) 江苏省自然科学基金资助项目(BK20130776)
【分类号】：TN912.3
本文编号：2122619
[Abstract]:In view of the quantitative analysis requirements of the actual small acoustic array scheme and direction-finding performance, the upper bound of the azimuth estimation error of the far-field sound source of an arbitrary plane array is derived. The four factors and their physical meanings of azimuth estimation of disturbance sensitivity factor are defined. It is proved that increasing the number of array elements and adopting uniform distribution of each direction of array elements can effectively reduce the disturbance sensitivity of the acoustic source orientation algorithm to the estimation of time difference of arrival between elements. The comparative analysis and numerical results show that the proposed method can quantitatively evaluate and compare the azimuth estimation performance of different planar array schemes.
【作者单位】： 南京理工大学电子工程与光电技术学院;
【基金】：国家自然科学基金资助项目(61171167,61401203) 江苏省自然科学基金资助项目(BK20130776)
【分类号】：TN912.3
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1 田可;杨向华;周继;;一种平面阵自适应方向图综合方法[J];信息与电子工程;2008年02期
2 唐义政,马敬广,温宁;平面阵产生多波束的一种简单方法[J];声学与电子工程;2002年02期
，本文编号：2122619
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