自聚焦主要由两个重要步骤组成，即相位误差估计和相位误差校正。
Autofocus generally encompasses two distinct steps, i. e. phase error estimation and phase error compensation.
合成孔径声呐成像中，主要通过自聚焦校正剩余相位误差。
In synthetic aperture sonar imaging, the residual phase error is mainly corrected via autofocus.
在自适应光学系统中，波前拟合误差直接影响到相位校正器的校正效果。
In the adaptive optical system, the fitting errors of wavefront impact correct effect of phase corrector directly.
计算机模拟表明，要获得准确GPS观测量来进行导航定位，必须进行天线相位中心引起误差的校正。
The outputs of simulation show that the real time error correction due to GPS antenna phase center movement is needed in order to acquire precision GPS observables.
基于雷达回波信号的PGA算法是在时域估计和校正系统相位误差的一种方法，算法较简单。
PGA algorithm based on radar echo signal is one method of estimating and correcting phase error in time domain, and its algorithm is simple to use.
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.
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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