NAME

       phasefilt - phasefilt

DESCRIPTION

       This program is part of GMTSAR.

              phasefilt [GMTSAR] - Apply adaptive non-linear phase filter

              USAGE:

       phasefilt  -imag  imag.grd -real real.grd [-alpha alpha][-psize size][-amp1 amp1.grd -amp2
       amp2.grd][-diff][-v]

              applies Goldstein adaptive filter  to  phase  [output:  filtphase.grd]  or  applies
              modified Goldstein adaptive filter to phase [output: filtphase.grd, corrfilt.grd]

       -imag  [required]  GMT format file of imaginary component -real [required] GMT format file
       of real component -alpha  exponent for filter - usually between 0.0 and  1.5  (0.0  should
       not filter).

       default: 0.5
              [Goldstein filter] (anything above 1.0 may be excessive)

              alpha < 0 will set alpha = (1 - coherence) [modified Goldstein]

       -psize  patch size for filtering. Must be power of two.

              default: 32

       -amp1            GMT  format  file  of  amplitude  image  of image 1. Needed (and applies)
       modified filter.  -amp2           GMT format file of amplitude image of  image  2.  Needed
       (and  applies)  modified filter.  -diff           Calculate difference between input phase
       and   output   phase.    -complex_out      Write   out   filtered   real   and   imaginary
       (filtphase_real.grd and filtphase_imag.grd) -v              Verbose.  -debug  Debug.

       example: phasefilt -imag imag.grd -real real.grd -alpha 0.5

              USAGE:

       phasefilt  -imag  imag.grd -real real.grd [-alpha alpha][-psize size][-amp1 amp1.grd -amp2
       amp2.grd][-diff][-v]

              applies Goldstein adaptive filter  to  phase  [output:  filtphase.grd]  or  applies
              modified Goldstein adaptive filter to phase [output: filtphase.grd, corrfilt.grd]

       -imag  [required]  GMT format file of imaginary component -real [required] GMT format file
       of real component -alpha  exponent for filter - usually between 0.0 and  1.5  (0.0  should
       not filter).

       default: 0.5
              [Goldstein filter] (anything above 1.0 may be excessive)

              alpha < 0 will set alpha = (1 - coherence) [modified Goldstein]

       -psize  patch size for filtering. Must be power of two.

              default: 32

       -amp1            GMT  format  file  of  amplitude  image  of image 1. Needed (and applies)
       modified filter.  -amp2           GMT format file of amplitude image of  image  2.  Needed
       (and  applies)  modified filter.  -diff           Calculate difference between input phase
       and   output   phase.    -complex_out      Write   out   filtered   real   and   imaginary
       (filtphase_real.grd and filtphase_imag.grd) -v              Verbose.  -debug  Debug.

       example: phasefilt -imag imag.grd -real real.grd -alpha 0.5

phasefilt  phasefilt [GMTSAR] - Apply adaptivMayo2024near phase filter               PHASEFILT(1)