pydda.cost_functions.J_function

pydda.cost_functions.J_function(winds, parameters)

Calculates the total cost function. This typically does not need to be called directly as get_dd_wind_field is a wrapper around this function and pydda.cost_functions.grad_J(). In order to add more terms to the cost function, modify this function and pydda.cost_functions.grad_J().

Parameters:

• winds (1-D float array) – The wind field, flattened to 1-D for f_min. The total size of the array will be a 1D array of 3*nx*ny*nz elements.

• parameters (DDParameters) – The parameters for the cost function evaluation as specified by the pydda.retrieval.DDParameters() class.

Returns:

J (float) – The value of the cost function