SUBTRREFPHA

In this chapter the processing of step SUBTRREFPHA is described.

This step requires the steps INTERFERO and COMPREFPHA for obvious reasons. In this step the reference phase of a mathematical body (ellipsoid) is subtracted from the complex interferogram. This is done by complex multiplication with the conjugated, written symbolically as follows:

$$I = I \cdot (\cos R_\phi - i \sin R_\phi )$$ (Y1)

Where I is the complex interferogram, $\cdot$ denotes pointwize multiplication, and $R\phi$ is the reference phase for a certain point.