Gamma LAT: Reference Manual


diplane_helix

ANSI-C program: diplane_helix.c

NAME
diplane_helix - Calculation of diplane and helix decomposition terms from the circular components.

SYNOPSIS
diplane_helix <LL> <RR> <SLC_par> <diplane> <helix> <MLI_par> [rlks] [azlks] [loff] [nlines] [scale]

<LL> (input) SLC image with LL circular component (FCOMPLEX)
<RR> (input) SLC image with RR circular component (FCOMPLEX)
<SLC_par> (input) SLC ISP image parameter file
<diplane> (output) multi-look intensity image with diplane component (FLOAT)
<helix> (output) multi-look intensity image with helix component (FLOAT)
<MLI_par> (output) MLI ISP image parameter file
[rlks] number of range looks
[azlks] number of azimuth looks
[loff] offset to starting range (default=0)
[nlines] number of SLC lines to process (default=entire file)
[scale] scale factor for output MLI (default = 1.0)

EXAMPLE
diplane_helix 20090501.ll 20090501.rr 20090501.slc.par 20090501.diplane 20090501.helix 20090501.mli.par 2 4 0 - 1.0

The program returns the diplane and helix components of the Krogager target decomposition starting from the left and right circular components of the scattering matrix. In this example multi-look factors of 2 and 4 have been used to obtain roughly square pixels on the ground.

DESCRIPTION
diplane_helix computes the diplane and helix components of the Krogager decomposition (Krogager, 1990) starting from the left and right circularly polarized images of the original scattering matrix. The polarization basis from the original HV to the LR geometry can be performed with lin_comb_cpx.

The input binary files of type FCOMPLEX. The output binary files are of type FLOAT

DIAGNOSTICS
All messages are generally self-explanatory.

SEE ALSO
typedef_ISP.h .


© Copyrights for Documentation, Users Guide and Reference Manual by Gamma Remote Sensing, 2009.
UW, CW, MS last change 27-Nov-2009.