球面谐波域约束卡尔曼波束形成的源定位

Rui Hu, Qinghua Huang
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引用次数: 1

摘要

提出了一种球面谐波域约束卡尔曼波束形成方法,用于球面阵列捕获的多源波束的局部定位。它扫描权值在三维空间中的欧氏范数来估计源的方向。在存在转向矢量不匹配的情况下,可以提高声源定位的精度。此外,它还具有快速收敛和在线实现的优点。仿真结果表明,与期望最小方差无失真响应(MVDR)和对角加载(DL)方法相比,该算法对任意转向向量失配具有鲁棒性,且快照数量少。
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Source localization using constrained Kalman beamforming in spherical harmonics domain
A constrained Kalman beamforming (CKB) method in spherical harmonics domain is proposed to localize multiple sources captured by spherical arrays. It scans the Euclidean norm of the weights in three-dimensional space to estimate source directions. It can improve the accuracy of sound source localization when steering vector mismatch exits. Moreover, it has the advantage of rapid convergence and online implementation. Compared with the desired minimum variance distortionless response (MVDR) and diagonal loading (DL) methods, simulation results show that the proposed algorithm has robustness to arbitrary steering vector mismatch and low number of snapshots.
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