基于修正传播算子的宽带相干源DOA估计

DOA estimation of wide-band coherent source based on modified propagator method

将数据共轭重构的修正托别列兹方法(MTOP)引伸到宽带传播算子算法中,提出了修正的宽带传播算子DOA估计算法,从理论上论证了这种引申的合理性.通过理论分析和数值仿真,证明该算法在快拍数有限和低信噪比的情况下,可明显提高信号DOA估计的性能.在不增加运算量的条件下,该算法性能优于OPM算法.

The modified wide-band propagator algorithm is presented by introduction of conjugate-data-reconstructed modified Toeplitz method into wideband propagator algorithm. The rationality of this method is verified theoretically. Theoretical analysis and simulation show that this algorithm can obviously improve the perform gnces of the signal DOA estimation when the snapshot number is limited and the SRN is low. Moreover its performance is better than OPM algorithm, and its computational effort is about equal to that of the typical propagator algorithm.