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Autofocus generally encompasses two distinct steps, i. e. phase error estimation and phase error compensation.
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。
Displaced phase center algorithm is an effective motion compensation method when the motion error along the synthetic aperture is small.
位移相位中心法在合成孔径声呐载体运动误差较小时是一种运动补偿的有效方法。
PGA algorithm, which can compensate any-order phase error in airborne SAR motion compensation, is discussed in this article. A fast PGA algorithm is also proposed.
研究了机载合成孔径雷达运动补偿中可以补偿任意阶相位误差的相位梯度自聚焦(pga)算法，提出一种PGA快速算法。
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