摘要
基阵处理是对空间传播波所载信息的处理。在实际水声环境中,信号波阵面在随机时变介质中传播,常常出现空间解相关,导致波向量谱以真正的信号到达方向(DOA)为中心的角扩展。本文论述了这种带有角扩展的所谓广义指向性信号的基阵处理,并就这种信号模型在能量意义上实现了信号匹配。本文还给出了广义指向性信号模型的计算机模拟方法,同时给出了一些计算机模拟的结果和新安江水库实验数据。
Array processing is to process the signals carried by the propagating waves received with an army of sensors. When signals propagate through the practical random time-variant medium, their wavefronts can show progressive losses of coherence with increasing spatial separation. These decorrelations of wavefronts result in an angular spread in the wavenumber spectrum centered about the true signal Direction-Of-Arrival (DOA). This paper puts the emphasis upon the array processing of the angular-spread signal which is called the generalized directional signal and aims to match this signal model in the energy sense. In this paper, we present an approach to the computer simulation of the so-called generalized directional signal model. Some results of computer simulation experiments and lake-tests in Xinganjiang river are also given.
出处
《声学学报》
EI
CSCD
北大核心
1992年第4期285-291,共7页
Acta Acustica
