發(fā)布時(shí)間：2018-07-14 18:46

【摘要】：針對實(shí)際小型聲測節(jié)點(diǎn)陣列方案和測向性能的定量分析需求,通過推導(dǎo)任意平面陣遠(yuǎn)場聲源方位角估計(jì)誤差上界,明確了方位角估計(jì)擾動敏感因子的4個(gè)影響要素及其物理含義,證明了增加陣元對數(shù)量和采用陣元各向均勻分布等措施能有效降低聲源定向算法對陣元間波達(dá)時(shí)間差估計(jì)的擾動敏感性.比較分析與數(shù)值結(jié)果表明,該分析方法能夠定量評估和比較不同平面陣方案的方位角估計(jì)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.
【作者單位】： 南京理工大學(xué)電子工程與光電技術(shù)學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61171167,61401203) 江蘇省自然科學(xué)基金資助項(xiàng)目(BK20130776)
【分類號】：TN912.3

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