l3py.filter

Spatial filters for post-processing of potential coefficients.

class l3py.filter.DDK(level)

Implements the DDK filter by Kusche et al. (2009).

Parameters:level (int) – DDK filter level (positive, non-zero)

Methods

filter(gravityfield)

Apply the DDK filter to a PotentialCoefficients instance.

filter(gravityfield)

Apply the DDK filter to a PotentialCoefficients instance.

Parameters:gravityfield (PotentialCoefficients instance) – gravity field to be filtered, remains unchanged Returns:result – filterd copy of input Return type:PotentialCoefficients instance Raises:ValueError – if maximum spherical harmonic degree is greater than 120

class l3py.filter.Gaussian(radius)

Implements a Gaussian filter.

Parameters:radius (float) – filter radius in kilometers

Methods

filter(gravityfield)

Apply the Gaussian filter to a PotentialCoefficients instance.

filter(gravityfield)

Apply the Gaussian filter to a PotentialCoefficients instance.

Parameters:gravityfield (PotentialCoefficients instance) – gravity field to be filtered, remains unchanged Returns:result – filterd copy of input Return type:PotentialCoefficients instance

class l3py.filter.SpatialFilter

Base interface for spatial filters applied to a PotentialCoefficients instance. Derived classes must at least implement a filter method which takes a PotentialCoefficients instance as argument. The gravity field passed to this method should remain unchanged.

Methods

filter