基于小波多分辨分析在DOA估计中的应用

DOA estimation based on wavelets multi-distinguishing analysis

提出了利用小波多分辨分析特点来提高阵列天线的DOA分辨率的一种方法。通过对接收信号进行小波去噪,然后通过空间谱估计,可得到准确的DOA方向,从而提高阵列天线的性能:一来可以减少阵列天线阵元的数目,二则可以提高阵列天线的分辨率。进而起到减少对阵列天线的约束作用。

The method how to increase the array antenna＇ s distingnisting of DOA through by the application of wavelets muti-distingnist analysis is expressed in this article. Though the removement of denoising by wavelet to the arrival signal, then estimated though spatial spectrum, it may get the accurate DOA direction. Thus it could improve the performance of the array antenna, including： firstly it could reduce the number of the array element of the array antenna, secondly it could improve the ability of the distinguish of the array antenna. Then, it plays the role of the reduce of the restrainting of the array antenna.