Direct phase estimation from phase differences using fast elliptic partial differential equation solvers.
Direct phase estimation from phase differences using fast elliptic partial differential equation solvers.
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DOI：
10.1364/ol.14.001107
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发表时间：
1989-10
期刊：
影响因子：
3.6
通讯作者：
D. Ghiglia;Louis A. Romero
中科院分区：
文献类型：
--
作者：
D. Ghiglia;Louis A. Romero
从相位差中获得鲁棒的相位估计是光学和信号处理界几个重要领域的共同问题。具体的应用领域包括散斑成像和干涉测量、自适应光学、补偿成像和相干成像（如合成孔径雷达）。我们推导出一个简洁的形式描述的相位估计问题的方程，这些方程的一般形式的椭圆型偏微分方程，并说明结果的重建大M N网格，使用现有的，出版的，和现成的FORTRAN子程序。
Obtaining robust phase estimates from phase differences is a problem common to several areas of importance to the optics and signal-processing communities. Specific areas of application include speckle imaging and interferometry, adaptive optics, compensated imaging, and coherent imaging such as synthetic-aperture radar. We derive in a concise form the equations describing the phase-estimation problem, relate these equations to the general form of elliptic partial differential equations, and illustrate results of reconstructions on large M by N grids, using existing, published, and readily available FORTRAN subroutines.