At successful exit the **process control flag** is switched on:

comp_refpha: 1

The output (in the **products result file**) looks like:

******************************************************************* *_Start_comprefpha ******************************************************************* Degree_flat: 5 Estimated_coefficients_flatearth: 5.17144173e+03 0 0 4.03705656e-03 1 0 2.17736976e-01 0 1 -2.05452064e-06 2 0 2.15880157e-07 1 1 -1.27934869e-05 0 2 8.80499980e-10 3 0 -1.64339133e-11 2 1 -8.28354289e-11 1 2 -6.04376860e-10 0 3 -1.64239900e-13 4 0 2.25037286e-15 3 1 1.48243991e-14 2 2 5.52622526e-14 1 3 1.74773307e-12 0 4 1.11724810e-17 5 0 2.74597475e-20 4 1 -2.64743817e-18 3 2 4.10973605e-18 2 3 -3.09581184e-17 1 4 -6.94891272e-16 0 5 ******************************************************************* * End_comprefpha:_NORMAL *******************************************************************

In the log file, some statistics are given for the errors (observation minus estimated value). These errors should have a maximum of 0.1 phase cycle. The can be plotted with GMT or someother package to evaluate the difference between the polynomial and the 'observations'.

Here also the standard deviation per estimated coefficients is given. This std. seems to be too large, but an error in the computations could not be found.

The polynomial can not easily be visualized at the moment. (It is
normalized, not evaluated in this step.) In the old method of the
interfero step (see Chapter 23), there was a card to
output the reference phase polynomial because it was evaluated there
anyway. It seems logical to add a card for outputting the (wrapped or
unwrapped) reference phase in the step subtrrefpha
(Chapter 25), which likely will be added in one of the
cumming releases.

Leijen 2009-04-14