Lambert

class sonic.Lambert

Bases: sonic.Reflectance

Constructor Summary

Lambert(AL)

Instantiates a sonic Lambert object.

Inputs:

• AL (n,m): Albedo matrix between 0 and 1

  Note: can be scalar.

Outputs:

• obj (sonic.Lambert): Lambert reflectance model object

References

• “Photometria sive de mensura et gradibus luminis…”

  Jean-Henri Lambert

• Spacecraft Optical Navigation, forthcoming textbook

  by John Christian

Last revised: 09/30/2024 Last author: Priyal Soni

Property Summary

AL

Albedo

Method Summary

refl(inputType, var1, var2, varargin)

calculates the BRDF of a surface as described by the Lambert reflectance model.

Inputs:

• obj (sonic.Lambert): Lambert reflectance

  model object.

• inputType (string):

  • “iep” for incidence/emission/phase angles

  • “iea” for incidence/emission/azimuth angles

  • “ien” for incidence/emission/normal vectors

    – Must be column vectors, (3xn)

• var1: Must be a double or PointsS2 object

• var2: Must be a double or PointsS2 object

• varargin: - REQUIRED var3 input for “ien”

  • optional var3 input for “iea” and “iep”

  • Must be a double or PointsS2 object

Outputs:

• r (:,:) (double): matrix of BRDF values

Last revised: 10/02/2024 Last author: Priyal Soni