Setup Instructions for Interferometric SAR Processing

Setting personal environmental variables:

  • Copy SAR_CONFIG from /home/SAR
  • Change $MY_SAR in SAR_CONFIG to ~/SAR
  • In home directory, create:
      ~/SAR
      ~/SAR/ROI_PAC
      ~/SAR/BIN_SUN
      ~/SAR/OUR_SCR
  • In ~/SAR/INT_SCR link to /home/SAR/ROI_PAC/INT_SCR/*
  • In ~/SAR/BIN_SUN link to /home/SAR/BIN_SUN/*
  • In ~/SAR/OUR_SCR link to /home/SAR/OUR_SCR/*
  • Creating raw data:

  • Create parent directory t###, where ### is the track number
  • Create directories t###/date1 and t###/date2
  • Dates for images are YYMMDD, the date that the image was obtained
  • If date is unknown use a dummy name, the true date will be in the filenames once you load them
  • Copy data to respective directories using load_remote_tape.pl
  • Change directory names to date names if dummy names were used.
  • Use make_raw.pl in each t###/date directory to create date.raw files
  • Setting up to process data

  • Create int_date1_date2.proc file in parent directory t###
  • Must include:
      SarDir1="date1.raw directory"
      SarDir2="date2.raw directory"
      TopoDir="name for topo simulation directory"
      DEM="full pathname to DEM file, if topo is to be taken out using DEM"
  • Use DEM=OFFCAMPUS if topo is to be taken out using offcampus DEM

  • Can include: (parenthesis around default values)
      FilterStrength =(.75)
      UnwrappedThreshold =(.73)
      OrbitType =(PRC)
      Looks_int =(4)
      Looks_unw =(4)
      Looks_small =(16)
      pixel_ratio =(5)
      Looks_small_z =(80)
      unw_seedx =(0)
      unw_seedy =(0)

  • If desired, create date.proc in directory t###/date or roi.proc in directory t###/ if parameters are same for all images.
  • roi.proc or date.proc can include: (parenthesis around default values)
      before_z_ext = (1500)
      after_z_ext = (1500)
      near_rng_ext = (700)
      far_rng_ext = (0)
  • Processing data

  • Make sure that the following exist in t###/:
      ./SarDir1/date1.raw
      ./SarDir1/date1.raw.rsc
      ./SarDir2/date2.raw
      ./SarDir2/date2.raw.rsc
      int_date1_date2.proc
      DEM, if being used
  • run process.pl int_date1_date2.proc


  • LAST UPDATE May 29, 1998
    This software is part of the JPL/Caltech ROI_PAC suite.
    Not for general distribution.
    For more info:
    roi_pac@jpl.nasa.gov