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本文推导了均匀圆阵作为接收阵时的相位模式空间，证明圆阵在相位模式空间可以等效为一个虚拟线阵，并把高分辨方位估计算法应用到均匀圆阵相位模式空间虚拟线阵波束输出．计算机仿真结果显示，波束域Root－MUSIC算法应用到虚拟线阵时可以获得良好的解不相关信源的能力，而波束域WSF算法则具有比模式平滑算法更佳的解相干信源性能。
In this paper, we derive the phase mode space when the uniform circular array is used as the receiving array. It is proved that the circular array can be equivalent to a virtual linear array in the phase mode space and the high resolution DOA estimation algorithm is applied to the uniform circular array phase mode virtual linear array beam Output. Computer simulation results show that the beam-root WS-MUSIC algorithm can get a good capability of solving uncorrelated sources when it is applied to virtual linear arrays, while the beam domain WSF algorithm has better performance than the mode-smoothing algorithm.