公开(公告)号：US20150346338A1

公开(公告)日：2015-12-03

申请号：US14654416

申请日：2014-01-22

Applicant: FONDAZIONE ISTITUTO ITALIANO DI TECHNOLOGIA

Inventor： Marco Crocco ,  Andrea Trucco ,  Vittorio Murino

IPC: G01S15/89 ,  G10K11/34

CPC classification number: G01S15/89 ,  G10K11/341 ,  H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405

Abstract: A method of configuring planar transducer arrays for broadband signal processing by 3D beamforming, wherein a superdirective beamforming technique for low-frequency signal components is combined with a sparse and aperiodic array pattern for high-frequency components in a predetermined frequency range, and wherein the positions of the individual transducers at the aperture of the array and the FIR filter coefficients are further optimized in parallel, by a hybrid iterative process including an analytical calculus for determining the FIR filter coefficients and a stochastic calculus for determining the transducer positions at the aperture of the planar transducer arrays, by minimization of a cost function.

Abstract translation: 一种用于通过3D波束形成配置用于宽带信号处理的平面换能器阵列的方法，其中用于低频信号分量的超向量波束成形技术与用于预定频率范围内的高频分量的稀疏和非周期阵列图案组合，并且其中， 通过包括用于确定FIR滤波器系数的分析演算法和用于确定FIR滤波器系数的孔径处的换能器位置的随机微积分的混合迭代过程来进一步平行地优化阵列孔径处的各个换能器和FIR滤波器系数 平面换能器阵列，通过最小化成本函数。