fried_filter¶
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FTR.ftr.
fried_filter
(shape)[source]¶ The fried filter is for a system geometry where the slope measruement points are taken to be the difference between two adjacent points. As such, the slopes are reconstructed to be the phase points 1/2 a subaperture away from the measured point.
In this scheme, the slope measruement in the center of four phase measurement points is taken (in the x-direction) to be the average of the x slope between the top measruements and the x slope between the bottom measurement.