H/A/Λ Polarimetric Decomposition


Looking for polarimetric decomposition, I found a material that talks about H/A/Λ Polarimetric decomposition, where "Λ " is the intensity, defined as the weighted average of the eigenvalues of C (covariance matrix). If anyone in the community knows a little about this parameter, I would really like to learn about it and know if it is possible to calculate this parameter in SNAP.

The reference of material is: https://doi.org/10.1029/2011GM001113

Thanks in advance!