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Workspace Method jacobianAddFreqStretch
Description
Includes a frequency fit of stretch type in the Jacobian. Retrieval of deviations between nominal and actual backend frequencies can be included by this method. The assumption here is that the deviation varies linearly over the frequency range (following ARTS basis function for polynomial order 1). This method adds one element to the state vector (x).
Authors: Patrick Eriksson
Synopsis
| jacobianAddFreqStretch( | jacobian_quantities, jacobian_agenda, f_grid, df ) |
Variables
| OUT+IN | jacobian_quantities | (ArrayOfRetrievalQuantity) | The retrieval quantities in the Jacobian matrix. |
| OUT+IN | jacobian_agenda | (Agenda) | Pure numerical Jacobian calculation agenda. |
| IN | f_grid | (Vector) | The frequency grid for monochromatic pencil beam calculations. |
| GIN | df | (Numeric, Default: 100e3) | Size of perturbation to apply. |