波达方向矩阵法性能研究

Research on Performance of DOA Matrix Method

笔者主要围绕波达方向矩阵法展开研究,首先介绍了波达方向矩阵法的相关背景,说明波达方向矩阵法在阵列信号处理中的重要位置;其次分析了波达方向矩阵法的阵列结构、信号模型以及核心思想;再次针对波达方向矩阵法的性能进行分析,主要讨论了信噪比、快拍数、阵元数以及角度间隔等要素对性能的影响,并通过仿真结果进行论证分析;最后针对波达方向矩阵法的相关源问题,介绍空域平滑的波达方向矩阵法的核心思想,并仿真验证了空域平滑的波达方向矩阵法对于相关源的有效性.针对波达方向矩阵法进行深入探讨,为后续波达方向矩阵法的相关研究奠定了坚实的基础。

Firstly,the background of DOA matrix method is introduced,and the important position of DOA matrix method in array signal processing is explained.Secondly,the array structure and signal model of DOA matrix method and the core idea of DOA matrix method are given.Thirdly,the performance of DOA matrix method is analyzed,and the influence of signal-to-noise ratio,snapshot number,array element number,angle interval and other factors on the performance is mainly discussed.Then,aiming at the problem of correlation source of DOA matrix method,the core idea of spatial smoothing DOA matrix method is introduced,and the effectiveness of spatial smoothing DOA matrix method for correlation source is verified by simulation.Finally,the DOA matrix method is expanded.The in-depth study of DOA matrix method lays a solid foundation for the subsequent research based on DOA matrix method.