一种基于最小冗余线阵的时空共轭循环谱相关ESPRIT算法
A TEMPORO-SPATIAL CONJUGATE CYCLIC ESPRIT SPECTRUM CORRELATION ALGORITHM WITH MINIMUM-REDUNDANCY
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摘要: 本文提出了一种基于最小冗余线阵的共轭循环谱相关ESPRIT算法。该算法引入了时空联合处理,构造了最小冗余线阵的伪数据矩阵,并基于此矩阵进行DOA估计。当采用M阵元最小冗余线阵时,该算法的等效阵列孔径为2N-1(NM)。理论和计算机仿真实验均表明:与基于均匀线阵的共轭循环ESPRIT算法相比,该算法具有良好的DOA估计性能,扩展了阵列孔径,抗噪能力强,分辨率高,能用较少的阵元估计更多的信号源方向。
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关键词:
- 最小冗余线阵; 虚拟阵列; 波达方向估计
Abstract: ln this paper,the spectral correlation conjugate cyclic ESPRIT with Minimum Redundancy Linear-Arrays (MRLA) is presented.The algorithm constructs the pseudodata matrix of MRLA to estimate Direction-Of-Arrival (DOA) through temporal and spatial processing The equivalent array aperure of the algorithm is 2N-1 with M-sensor MRLA (NM).Theoretical analysis and computer simulations show that the algorithm is of better performance,such as extending aperture,being insensitive to noise,having higher resolution,and estimating more sources With fewer sensors -
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