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Last modified: Wed Dec 20 10:37:44 2023.

general/science/spd_mtm/models/pl

• SPD_MTM_PL_FUN
• SPD_MTM_PL_LGLK
• SPD_MTM_PL_NORM
• SPD_MTM_WHT_LGLK
  

Routine Descriptions

 :Description:
   Power Law (PL) function values at the given frequencies
   with the pl_par parameters.

 :Params:
   INPUTS:
          f - frequency vector
     pl_par - power law parameters:
              pl_par[0] --> c, constant factor
              pl_par[1] --> beta, spectral index
   OUTPUTS:
      plfun - power law function
      
 :Author:
     Simone Di Matteo, Ph.D.
     8800 Greenbelt Rd
     Greenbelt, MD 20771 USA
     E-mail: simone.dimatteo@nasa.gov  

(See general/science/spd_mtm/models/pl/spd_mtm_pl_fun.pro)

 :Description:
   Evaluate the log-likelihood of
   the power law (PL) PSD model.
 
 :Params:
   INPUTS:
          pl_par - power law PSD parameters:
               
   OUTPUTS:
               M - log-likelihood
   
   COMMON VARIABLES:
     max_lklh
          psd_ml - PSD for the maximum likelihood model fit
           ff_ml - frequency vector for the maximum likelihood model fit
        alpha_ml - half degree of freedom of the PSD at each frequency
               
 :Uses:
     spd_mtm_pl_norm.pro
     spd_mtm_pl_fun.pro
 
 :Author:
     Simone Di Matteo, Ph.D.
     8800 Greenbelt Rd
     Greenbelt, MD 20771 USA
     E-mail: simone.dimatteo@nasa.gov  

(See general/science/spd_mtm/models/pl/spd_mtm_pl_lglk.pro)

 :Description:
   Constant normalization factor for the PL model estimated with
   the maximum likelihood theoretical solution.

 :Params:
   INPUTS:
       bet - spectral index
        ff - Fourier frequencies vector
       psd - power spectral density
     alpha - half degree of freedom of Smtm for each frequency
   
   OUTPUTS:
         c - constant factor
     
 :Author:
     Simone Di Matteo, Ph.D.
     8800 Greenbelt Rd
     Greenbelt, MD 20771 USA
     E-mail: simone.dimatteo@nasa.gov

(See general/science/spd_mtm/models/pl/spd_mtm_pl_norm.pro)

 :Description:
   Evaluate the log-likelihood of
   the white noise (WHT) PSD model.
 
 :Params:
   INPUTS:
         wht_par - power law PSD parameters:

   OUTPUTS:
               M - log-likelihood

   COMMON VARIABLES:
     max_lklh
          psd_ml - PSD for the maximum likelihood model fit
           ff_ml - frequency vector for the maximum likelihood model fit
        alpha_ml - half degree of freedom of the PSD at each frequency
 
 :Author:
     Simone Di Matteo, Ph.D.
     8800 Greenbelt Rd
     Greenbelt, MD 20771 USA
     E-mail: simone.dimatteo@nasa.gov  

(See general/science/spd_mtm/models/pl/spd_mtm_wht_lglk.pro)