计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (5): 127-129.

• 网络、通信与安全 • 上一篇    下一篇

基于最大输出功率的近场阵列定位算法

肖明明 梁奂晖   

  1. 仲恺农业技术学院
  • 收稿日期:2006-07-13 修回日期:1900-01-01 出版日期:2007-02-11 发布日期:2007-02-11
  • 通讯作者: 肖明明

The Estimation of Source Locations Based on Maximal Output Power Used In Near-field Arrays

  • Received:2006-07-13 Revised:1900-01-01 Online:2007-02-11 Published:2007-02-11

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。

关键词: 最大输出功率, 定位, 近场阵列

Abstract: 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.

Key words: maximal output power, orientation, near-field array