NAME

       xcorr - xcorr

SYNOPSIS

       xcorr master.PRM aligned.PRM [-time] [-real] [-freq] [-nx n] [-ny n] [-xsearch xs] [-ysearch ys]

DESCRIPTION

       This program is part of GMTSAR.

              xcorr [GMTSAR] - Compute 2-D cross-correlation of two images

       master.PRM       PRM file for reference image aligned.PRM                     PRM file of secondary image
       -time                     use    time    cross-correlation    -freq                      use    frequency
       cross-correlation  (default)  -real                    read  float  numbers  instead  of  complex numbers
       -noshift                ignore ashift and rshift in prm file (set to 0) -nx  nx                 number of
       locations  in  x  (range)  direction  (int)  -ny   ny                  number of locations in y (azimuth)
       direction  (int)  -nointerp                do  not  interpolate  correlation  function  -range_interp  ri
       interpolate  range  by  ri  (power  of two) [default: 2] -norange                do not range interpolate
       -xsearch xs             search window size in x (range) direction (int  power  of  2  [32  64  128  256])
       -ysearch  ys              search  window  size  in y (azimuth) direction (int power of 2 [32 64 128 256])
       -interp   factor          interpolate  correlation  function   by   factor   (int)   [default,   16]   -v
       verbose output:

              freq_xcorr.dat (default) time_xcorr.dat (if -time option))

       use fitoffset.csh to convert output to PRM format

       Example:  xcorr IMG-HH-ALPSRP075880660-H1.0__A.PRM IMG-HH-ALPSRP129560660-H1.0__A.PRM -nx 20 -ny 50 xcorr
       file1.grd file2.grd -nx 20 -ny 50 (takes grids with real numbers)

       Usage: xcorr master.PRM aligned.PRM [-time] [-real] [-freq] [-nx n] [-ny n] [-xsearch xs]  [-ysearch  ys]
       master.PRM       PRM file for reference image aligned.PRM                     PRM file of secondary image
       -time                     use    time    cross-correlation    -freq                      use    frequency
       cross-correlation  (default)  -real                    read  float  numbers  instead  of  complex numbers
       -noshift                ignore ashift and rshift in prm file (set to 0) -nx  nx                 number of
       locations  in  x  (range)  direction  (int)  -ny   ny                  number of locations in y (azimuth)
       direction  (int)  -nointerp                do  not  interpolate  correlation  function  -range_interp  ri
       interpolate  range  by  ri  (power  of two) [default: 2] -norange                do not range interpolate
       -xsearch xs             search window size in x (range) direction (int  power  of  2  [32  64  128  256])
       -ysearch  ys              search  window  size  in y (azimuth) direction (int power of 2 [32 64 128 256])
       -interp   factor          interpolate  correlation  function   by   factor   (int)   [default,   16]   -v
       verbose output:

              freq_xcorr.dat (default) time_xcorr.dat (if -time option))

       use fitoffset.csh to convert output to PRM format

       Example:  xcorr IMG-HH-ALPSRP075880660-H1.0__A.PRM IMG-HH-ALPSRP129560660-H1.0__A.PRM -nx 20 -ny 50 xcorr
       file1.grd file2.grd -nx 20 -ny 50 (takes grids with real numbers)

xcorr  xcorr [GMTSAR] - Compute 2-D cross-correlatioMayf2024 images                                     XCORR(1)