适当地选取时延和非均匀阵列阵元位置，该方法的信号频率和2 D到达方向估计无模糊。
With choosing signal time delay and element location of nonuniform array properly, the estimated frequencies and 2 D directions of arrival are unambiguous.
文中基于子空间类测向方法，在远场情况下，提出了一种新的估计阵元位置误差的有源校正算法。
In the case of far field sources, based on the subspace direction-finding technique, a new method for active calibration of array shape is presented.
基于特征值分解的DOA估计算法对信号的相位误差非常敏感，因此有必要对阵元位置误差进行校正。
DOA estimation algorithm based on eigenvalue decomposition is very sensitive to phase error of array signal.
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