CHAMP dewarp equations
From Monnier Group Research Wiki
CHAMP Dewarp Equations John Monnier written up 2010May26
based on idea that the fringe frequency is known and the opd steps in the ABCD are known but not equally spaced.
So assume we have a fringe of spatial frequency <math>k_0 = \frac{2 \pi}{\lambda_0}<\math> and true phase <math>\phi_0<\math>. Then the true fringe intensity:
<math> I_i = A_0 sin (2 \pi k_0 x_i - \phi_0 ) + I_0 <\math>
The true quadrature terms X,Y are then: <math> X_0 = -A_0 sin(\phi_0) Y_0 = A_0 cos(\phi_0) <\math>
