DoA Reliability for Distributed Acoustic Tracking
DoA Reliability for Distributed Acoustic Tracking
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DOI：
10.1109/lsp.2018.2849579
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发表时间：
2018-09-01
影响因子：
3.9
通讯作者：
Naylor, Patrick A.
中科院分区：
文献类型：
--
作者：
Evers, Christine;Habets, Emanueel A. P.;Naylor, Patrick A.
分布式声学跟踪使用声学传感器网络来估计源位置的轨迹。由于通常难以从单个节点估计源-传感器距离，因此必须从到达方向（DoA）估计推断源位置。由于混响和噪声，声场随着源-传感器距离的增加而变得越来越扩散，导致到达方向（DoA）估计精度降低。为了区分准确和不确定的DoA估计，这封信建议将相干扩散比作为单源跟踪DoA可靠性的度量。结果表明，源位置，因此，可以通过利用所有节点的空间多样性概率三角。
Distributed acoustic tracking estimates the trajectories of source positions using an acoustic sensor network. As it is often difficult to estimate the source-sensor range from individual nodes, the source positions have to be inferred from the direction-of-arrival (DoA) estimates. Due to reverberation and noise, the sound field becomes increasingly diffuse with increasing source-sensor distance, leading to a decreased Direction of Arrival (DoA)-estimation accuracy. To distinguish between accurate and uncertain DoA estimates, this letter proposes to incorporate the coherent-to-diffuse ratio as a measure of DoA reliability for single-source tracking. It is shown that the source positions, therefore, can be probabilistically triangulated by exploiting the spatial diversity of all nodes.