Gamma ISP: Reference Manual

SLC_corners

NAME
SLC_corners - calculate image corner and center coordinates in lat/lon. Calculate minimum and maximum values of latitde and longitude.

SYNOPSIS
SLC_corners <SLC_par> [terra_alt]

<SLC_par>	(input) ISP SLC/MLI image parameter file (text format)
[terra_alt]	(input) average terrain altitude (default: 300.000 meters)

EXAMPLES

SLC_corners 19971018.mli.par

DESCRIPTION
SLC_corners determines the latitude and longitude (decimal degrees) of the corners and center pixel of an SLC or MLI SAR image. The image can be in either ground-range or slant-range geometry. The average terrain height can be entered on the command line.

SLC_corners also calculates the minimum and maximum values of the latitude and logititude as well as the differences in latitude and longitude for the image. The differences are useful for determining the section of a larger DEM required for terrain geocoding of a SAR images. The coordinates are calculated on the basis of the WGS84 ellipsoid. The default terrain altitude above the ellipsoid is 300 meters, but can be changed by entering a value for the terr_alt parameter on the command line. An example of the output is shown below with a nominal terrain altitude selected to be 1000 meters:

$
        SLC_corners 19990915.slc.par 1000

        *** Calculate SLC/MLI image corners in geodetic latitude
        and longitude (deg.)

        *** Copyright 2010, Gamma Remote Sensing, v1.5 5-Oct-2010
        clw ***

        

        latitude (deg.):     
        35.10047588  longitude (deg.):   
        -115.54173894

        latitude (deg.):     
        35.28374024  longitude (deg.):   
        -116.61026273

        latitude (deg.):     
        34.16197807  longitude (deg.):   
        -115.79043064

        latitude (deg.):     
        34.34472513  longitude (deg.):   
        -116.84555720

        

        center latitude (deg.):    34.73052463 
        center longitude (deg.):  -116.23491341

        min. latitude (deg.):     
        34.16197807  max. latitude
        (deg.):       35.28374024

        min. longitude (deg.):   -116.84555720  max.
        longitude (deg.):    -115.54173894

        delta latitude (deg.):     
        1.12176217  delta longitude
        (deg.):     
        1.30381826

OPTIONS
The output is sent to the standard output file that can be redirected using the > shell redirection.

SLC_corners
  19971018.mli.par > 19971018.corners

SEE ALSO
SLC_par