Directionally Weighted Wave Field Estimation Exploiting Prior Information on Source Direction
Directionally Weighted Wave Field Estimation Exploiting Prior Information on Source Direction
复制标题
利用源方向先验信息的方向加权波场估计
DOI：
10.1109/tsp.2021.3070228
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Saruwatari Hiroshi
中科院分区：
文献类型：
--
作者：
Ueno Natsuki;Koyama Shoichi;Saruwatari Hiroshi
提出了一种利用震源方向先验信息的波场估计方法。首先，我们将波场估计问题表示为正则化最小二乘，其中波场的范数用于正则化项。波场的范数是根据反映震源方向先验信息的权函数定义的。我们推导出封闭形式的解决方案，利用理论的希尔伯特空间。数值实验结果表明，与现有的不使用任何先验信息的方法相比，该方法具有较高的估计精度。
A wave field estimation method exploiting prior information on source direction is proposed. First, we formulate a wave field estimation problem as regularized least squares, where the norm of the wave field is used for a regularization term. The norm of the wave field is defined on the basis of the weighting function that reflects the prior information on the source direction. We derive the closed-form solution using theories on Hilbert spaces. Results of numerical experiments indicated that high estimation accuracy can be achieved by using the proposed method in comparison with other current methods that do not use any prior information.