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本文主要研究智能天线中二维DOA估计算法。首先研究时空DOA矩阵估计方法,并进行了仿真。然后结合虚拟阵列变换技术对该算法进行有效的改进—时空虚拟DOA矩阵方法。改进后得到的仿真结果证明了该改进算法可以估计超过阵元数的信号,具有较高的分辨性能和较好的稳健性。
This paper mainly studies two-dimensional DOA estimation algorithm in smart antenna. Firstly, the space-time DOA matrix estimation method is studied and simulated. Then the algorithm is effectively improved by the virtual array transformation technology - Spatial and temporal virtual DOA matrix method. The simulation results obtained after the improvement prove that the improved algorithm can estimate the signals exceeding the number of array elements and has higher resolution performance and better robustness.