摘要
给出了一种近场源的到达角(DOA)和距离的二维参数联合估计算法.该算法利用四阶累积量矩阵的特征值估计DOA,通过在估计的DOA下进行有限的一维搜索得到距离估计.该算法将二维搜索降低为一维有限搜索,并提高了直接使用高阶累积矩阵估计信源位置的方法的距离估计精度.计算机仿真证实了该方法的有效性.
A joint estimation algorithm for two-dimensional DOA and range of near-field sources was proposed,which used the eigenvalues of a forth-order cumulant matrix to estimate DOA of each source.Then the range estimation was performed with the estimated DOA through finite one-dimensional searching.This algorithm reduces two-dimensional searching to one-dimensional searching,thus improving the precision of range estimation because a high-order cumulant matrix is used.Finally,the effectiveness of the proposed algorithm was verified by computer simulation.
出处
《应用科技》
CAS
2007年第9期58-60,共3页
Applied Science and Technology
关键词
近场源定位
四阶累积量
DOA估计
距离估计
near-field source localization
forth-order cumulant
DOA estimation
range estimation
