Nadir altimeter simulation avalaible

[Lucile Gaultier]

The skimulator is now able to simulate the nadir altimeter if you provide it with the model SSH.
So far a spectrum similar to the Jason-2 one is used to compute random noise. This error is added to the SSH interpolated on the SKIM nadir points.
To enable this functionality, add the key nadir to the parameter file:

Code:

nadir = True

add the ssh variables in the list_input_var:

Code:

list_input_var = { ......,
                           'ssh':['wlv', 'wlv']}

and in the list_output parameter keys:

Code:

list_output = [......,
                     'ssh_true', 'ssh_obs', 'ssh']

The parameter example files have been updated accordingly and should be used as a reference