摘要
盲波束形成是在不知道阵形、目标方位以及阵元响应等信息的情况下,只根据阵元输出恢复源信号。现有盲波束形成对窄带信号研究比较多,而对宽带信号盲波束形成论述较少。本文从信号模型、系统框图、处理目的三方面说明盲波束形成与盲源分离近似。并指出卷积混合模型盲源分离完全可以作为解决宽带信号盲波束形成问题的一种通用方法。
Blind beamforming is referred to as reconstructing desired signals given only the outputs of array and without the knowledge of sensor placement, direction of desired signals and sensor response. The currently available blind beamforming algorithms are usually concerned with narrowband signal beamforming, and the wideband situation is seldom discussed. This paper proposes a new viewpoint that blind beamforming is closely related to blind separation, and blind separation of convolved mixtures is a versatile method to resolve wideband blind beamforming problems. The proposed approach is explained in detail with respect to signal model, system configuration, and the objective of processing.
出处
《声学技术》
CSCD
2003年第1期40-43,共4页
Technical Acoustics
关键词
窄带盲波束形成
瞬时混合盲源分离
宽带盲波速形成
卷积混合盲源分离
narrowband blind beamforming
blind separation of instantaneous mixtures
wideband blind beamforming
blind sepa-ration of convolved mixtures
