pydda.cost_functions.calculate_background_cost¶
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pydda.cost_functions.
calculate_background_cost
(u, v, w, weights, u_back, v_back, Cb=0.01)[source]¶ Calculates the background cost function. The background cost function is simply the sum of the squared differences between the wind field and the background wind field multiplied by the weighting coefficient.
- Parameters
- u: Float array
Float array with u component of wind field
- v: Float array
Float array with v component of wind field
- w: Float array
Float array with w component of wind field
- weights: Float array
Weights for each point to consider into cost function
- u_back: 1D float array
Zonal winds vs height from sounding
- w_back: 1D float array
Meridional winds vs height from sounding
- Cb: float
Weight of background constraint to total cost function
- Returns
- cost: float
value of background cost function