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针对稀疏阵列模型下匹配追踪波达方向估计方法稳定性不足的问题,提出了改进的正则化正交匹配追踪波达方向估计方法——TROMPDOA(T-transform Regularized Orthogonal Matching Pursuit Directions of Arrival Estimation).仿真表明,TROMPDOA方法在计算复杂度上与原有正交匹配追踪波达方向估计方法OMPDOA(Orthogonal Matching Pursuit Directions of Arrival Estimation)相近,但在估计稳定性上要优于OMPDOA方法,特别是在低信噪比及信号源之间的角度较近时,TROMPDOA方法比OMPDOA方法稳定性提高1倍.实验验证了TROMPDOA方法适用于单元和多元目标估计,估计精度达到1.5°.
In order to solve the problem of lack of stability of matching tracking method for DOA estimation in sparse array model, an improved regularized Orthogonal Matching Pursuit Directions of Arrival Estimation (TROMPDOA) algorithm is proposed. The simulation shows that the TROMPDOA method is similar in computation complexity to Orthogonal Matching Pursuit Directions of Arrival Estimation (OMPDOA), but it is superior to OMPDOA in estimating stability, especially in the low Compared with the OMPDOA method, the TROMPDOA method improves the stability when the signal-to-noise ratio and the signal source angle are close to each other. The experimental results show that the TROMPDOA method is suitable for element and multivariate target estimation with an accuracy of 1.5 °.