摘要
针对MUSIC算法在非平稳噪声背景下DOA估计性能下降和信源个数受限的问题,利用空间时频分布(spatial time-frequency distribution,STFD),选择时频点构造时频相关矩阵,替代MU-SIC算法中的相关矩阵,设计了单矢量水听器DOA估计的WVD-MUSIC算法,通过仿真验证了新方法在噪声抑制能力、空间分辨能力和多目标分辨能力优于原方法.
In order to solve the problems that MUSIC algorithm DOA estimation performance in the background of non-stationary noise is degradation and it detection signal number limited by array element.Spatial Time-Frequency Distribution is used to designe a single vector hydrophone WVD-MUSIC algorithm,which select the time-frequency point to construct time-frequency correlation matrix,instead of the correlation matrix in the MUSIC algorithm.New method in the noise suppression,spatial distinguishing and multi-objective distinguishing capability superior than the original method is verified by simulation.
出处
《武汉理工大学学报（交通科学与工程版）》
2013年第4期801-804,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家部委基金项目资助(批准号:4010709010201)
