一种优化多通道声波束形成的方法

A method of acoustic beamforming optimization used in multi-channel acoustic receiver

摘要:

本文研究了水声接收系统波束形成的基础问题：基阵各通道不均衡是客观存在的,但这种客观存在往往被有意、无意中忽略,而且还存在一种误区,认为基阵阵元越多,这种不均衡会被自然弥补,造成的后果是接收系统的目标检测、方位估计等性能达不到预期,在实际工作中大多采取事后补救措施,不仅费时费力,效果还不尽人意。本文通过实例分析了水声接收系统中基阵各通道不均衡的原因,提出了一种减小基阵各通道不均衡的方法,为提高水声接收系统的目标检测、方位估计等性能打下了基础。

Abstract:

In this paper a principal question is studied about beamforming used in an acoustic receiver. The multi-channel disequilibrium exists objectively but always is neglected, and there is a mistaken idea that this disequilibrium is compensated naturally with increasing the number of array element. As a result, the expected performance of target-detecting and orientation-estimating is not achieved, though a lot of subsequent remedial measures have been taken at a large cost of time and other resources. The cause of channel disequilibrium is analyzed, and a reducing method is proposed, so this paper is useful to improve the performance of target-detecting and orientation-estimating in acoustic receiving equipment.