Contributed software
This is software that works with ROI_pac or adds to ROI_pac, written by the ROI_pac community. These programs are not in the released packages. Most or all of this software is open source, but the licensing is up to the individual authors.
- ALOS PALSAR raw data reading
ALOS_pre_processor and ALOS_merge by Rob Mellors and David Sandwell ALOS_preproc.tar.gz Note that you will need to install these executables to use make_raw_alos.pl in ROI_pac v.3.0. See PALSAR page for more details.
- Envisat ASAR long strip subsetting
This package contains some programs written by Howard Zebker with some modifications by Eric Fielding to determine the ground location of Envisat data from the satellite positions extracted from the DORIS orbit files. It also contains a slightly modified version of Sean Buckley's asa_im_decode program that can extract only a range of lines from an Envisat Level 0 (raw data) file. A Perl script make_raw_envi_subset.pl uses these programs to extract a subset of the raw data specified by a start and stop latitude. The accuracy is usually within a few hundred lines, and could be improved but it works fine for my purposes. Env-pass-cut.tgz (uploaded 10/10/2007 EJF)
Perl and matlab codes for reading output of ASF ALOS data searches and writing Google Earth output: ro_readers.tar
makedem.pl - Main perl script written by Noel Gourmelen download srtm tiles and output a DEM compatible for use with roi_pac based on geographic input. Uses GMT and matlab soft. See README file for environment variables and compilation setting.
A Perl script for converting ROI_pac "rmg" files (either .unw or .cor) to GMT grids. This is not very robust, but I find it useful. It works on geocoded and radar-geometry images. This should be installed in a MY_SCR directory (requires MY_SCR environment variable). rmg2grd.pl (uploaded 6/18/2008 EricFielding)
The SNAPHU program for phase unwrapping written by Curtis Chen SNAPHU page can be effective for some interferograms that don't unwrap well with the standard unwrapping tools in ROI_pac. A Perl script snaphu.pl to setup the SNAPHU input files from the ROI_pac files and run the program will be in the next release of ROI_pac.