摘要
在近场阵列中,为了降低信源位置变化对阵列性能的影响,基于最大输出功率,根据近场阵列的特点,提出了一种新的低复杂度快速收敛算法。通过搜索最大输出功率,对信号入射方向进行估计。实现麦克风阵列相应调节阵列权矢量,压制干扰,获得最大的信号增益。使得近场阵列如麦克风阵列能够快速适应位置不断变化的入射信号。与MUSIC等现有算法比较,仿真结果表明了该算法的快速定位性质的优越性。
In near-filed array,such as microphone arrays,the change of the source location affects the system performance greatly.Based on maximal output power,a low complexity searching algorithm is proposed with the near-field assumption.The DOA and the distance could be estimated just by searching the maximal output power.The proposed algorithm reduces the complexity compared with the conventional searching algorithm.And the simulation results show the effectiveness of the proposed algorithm.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第5期127-129,168,共4页
Computer Engineering and Applications
基金
广东省教育厅自然科学基金(the Natural Science Foundation of Department of Education of Guangdong Province
China under Grant No.Z02054)
广东省科技厅计划项目
关键词
近场阵列
最大输出功率
定位
near-field array
maximal output power
orientation
