distributed source meaning in English
分布源
Examples
- 3 ) < wp = 12 > using perturbation analysis , the space - correlation loss and the bearing - estimated error for finite - bandwidth incoherently distributed sources are evaluated analytically , respectively . it is disclosed that bandwidth - induced bearing bias increases monotonously with the signal ' s relative bandwidth . when the relative bandwidth is not small enough to be negligible , the spatially - only processing cannot lead to accurate bearing estimate , that is , the joint space and time processing is necessary for high - precision bearing estimation
3 )利用扰动分析方法，解析评价了有限带宽引起的非相干分布源的空间损耗及其对波达方向估计的影响；分析表明，带宽扰动引起的方向估计偏差随信号相对带宽单调增加；当相对带宽无法忽略时，为了得到高精度的波达方向估计，需要进行联合空时处理。 - The innovations of this thesis are as the follows : 1 ) it is analyzed that the lower - order jacobi - anger expansion model for an incoherently distributed source has better accuracy performance than some other approximate source models such as space frequency model , two - point source model , and low - rank approximate model . using the parametric decoupling property of the ja - based model , a novel angular parameter estimator is proposed , which is very robust in case of large angular spreading
本文从这三个方面开展了空间分布源波达方向估计研究，创新点包括： 1 )分析了低阶jacobi - anger级数展开近似模型的误差性能；利用该近似模型的参数解耦特性，提出了一种新的波达方向估计器，在大角度扩展条件下，该估计器表现非常稳健。 - A new kind of numerical method , the statistical distributed source boundary point method ( sdsbpm ) , used to calculate the acoustic radiation problem caused by the random vibrating body is presented ; a test for the effectiveness of the sdsbpm is carried out on the aspects of its calculation precision , adaptation to the geometric shape of vibrating body as well as its ability to overcome the non - uniqueness problem through various examples with different boundary shapes and different boundary value distributions
第四章提出了一种新型的随机振动声辐射计算方法?统计分布源边界点方法；通过诸多不同边界曲面和不同边界量分布的随机振动声辐射算例，从计算精度、对振动体表面几何形状的适应性以及克服解的非唯一性等方面，对统计分布源边界点方法的有效性进行了考证。
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