Create a file named "date1-date2.proc" that contains the input parameters for the main processing script.  The file must define the following parameters:
 
 

Required Parameters	Description
SarDir1	Directory containing raw SAR data for first scene
SarDir2	Directory containing raw SAR data for second scene
IntDir	Directory containing interferometric output files

In addition, the following optional parameters can be specified:

Optional Parameters	Description	Optional Values	Default Value
SimDir	Directory containing topographic simulation output files		SIM
DEM	Full path to Digital Elevation Model (DEM) used to remove topography		NULL
GeoDir	Directory containing tectonic simulation output files		GEO
FilterStrength	Strength of the filter used in the processing.	0-1	0.75
UnwrappedThreshold	Determines the extent of unwrapping.   Connected regions with a magnitude greater than the threshold as found in the file *.msk are included in the unwrapping process.	0-1	0.1
OrbitType	Type of orbit file, either precise orbits (PRC) or Delft orbits (ODR)	PRC, ODR	ODR
BaselineType	Given to discriminate baseline estimation technique		OrbitType
Rlooks_sim	Specifies the number of looks to take when averaging the raw SAR data.		4
Rlooks_int			Rlooks_sim
Rlooks_unw			Rlooks_sim
Rlooks_sml			16
pixel_ratio	pixel size ratio of azimuth/range		5
Alooks_sml	Defined as (pixel_ratio X Rlooks_sml)		80
before_z_ext			1500
after_z_ext			1500
near_rng_ext			700
far_rng_ext			0
usergivendop1	User defined doppler value for scene 1		0
usergivendop2	User defined doppler value for scene 2		0
unw_seedx	x coordinate where the phase unwrapping begins. The default places the seed in the middle of the image.		-9999
unw_seedy	y coordinate where the phase unwrapping begins.  The default places the seed in the middle of the image.		-9999
x_start	Specifies the range offset in pixels between the two SAR scenes.  The default value signals the processing to use the estimated range offset calculated from the a priori orbit information.		0.01
y_start	Specifies the azimuth offset in pixels between the two SAR scenes.  The default value signals the processing to use the estimated azimuth offset calculated from the a priori orbit information.		0.01
flattening	Used to specify the method of flattening. Set this variable to "orbit" if you do not have a DEM or other model simulation.  Set to "topo" to re-estimate the baseline information using a DEM and/or other model information.	orbit, topo	orbit
Threshold_mag	Defines an amplitude threshold when producing a mask during the unwrapping.  This helps to reduce side effects on the edges of the radar scene where amplitudes are small. (0=unwrap everywhere)	0-0.00005	5.0e-5
Threshold_ph_grd			0
sigma_thresh			1.0
smooth_width	Specifies the size of the filter window in range and azimuth used when creating the phase gradient mask		5
slope_width			5
concurrent_roi	Allows SAR processor to work on both SAR scenes simultaneously.	yes, no	no
mapping		dem_based	dem_based
cleanup	Remove intermediate files when finished	yes, no	no
CO_MODEL	Specifies a Coseismic model used in flattening. Make sure to set "flattening=topo".  Read the instructions for INTER_MODEL for details about naming input files.		NULL
INTER_MODEL	Specifies an Interseismic model used in flattening. Make sure to set "flattening=topo" for this option.  Provide three data files for each component of displacement along with three resource files.  ROI_PAC will expect the files to be named XE, XE.rsc, XN, XN.rsc, XU, and XU.rsc for the east, north, and vertical components, respectively, where the "X" can be a user defined prefix specified by the INTER_MODEL parameter.		NULL
Filt_method	Specify type of filter used	psfilt, adapt_filt	psfilt
unw_method	Specify unwrapping method.  Bridge.pl is only compatible with the "old" unwrapping method.	old, icu	old

Example file 920610-980509.proc:
 

SarDir1=920610 SarDir2=980509 IntDir=920610-980509 DEM=/a/computer/data/sar/DEM/SF/SF.dem unw_seedx=981 unw_seedy=254 flattening=topo INTER_MODEL=/a/computer/data/sar/GPS/SF/model_