基于模式空间处理方法提出了一种不需要角度预估计的宽带空间谱估计算法,将总体最小二乘相干信号子空间算法(TLS-CSM)中的聚焦矩阵的构造方法和频率加权聚焦方法引入模式空间宽带空间谱估计算法中,结合了模式空间算法不需要角度预估计的优点和酉聚焦的无聚焦信噪比损失的特性,大大减小了聚焦过程中的信噪比损失,从而进一步提高了算法的性能。
This paper proposed a wideband sources spatial spectrum estimation algorithm without initial DOA estimation based on modal space processing method which introduced the idea of total least square coherent subspace method (TLS-CSM), then we can get the advantages of the two means without the initial estimation of the DOA and the loss of SNR in focusing, thereby the performance of the method is improved further. The results of Monte Carlo simulation illustrated the effectiveness of the proposed method.