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<< Click to Display Table of Contents >> Polarimetry and PolInSAR - Polarimetry - Polarimetric Features |
  
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<< Click to Display Table of Contents >> Polarimetry and PolInSAR - Polarimetry - Polarimetric Features |
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Purpose
The simplest way to represent the polarimetric information contained in the scattering matrix is given by calculating some co- and cross polarized power combinations, as well as some selected ratios. Polarimetric features enable, to some extent, to identify combinations which are possibly suitable for data interpretation or classification purposes.
A Polarimetric Phase Difference (PPD) can be generated using two different polarization of the same polarimetric acquisition. It is worthwhile to mention that, especially working with wavelengths shorter than the P band, it makes sense to generate the PPD using co-polarized Reference and Secondary data (i.e. HH or VV polarizations). See the Polarimetric Interferogram Generation module for further details.
Technical Note
None.
Input File(s)
Input HH File
Input file names of the scattering matrix (_slc). This file is mandatory.
Input HV File
Input file names of the scattering matrix (_slc). This file is mandatory.
Input VH File
Input file names of the scattering matrix (_slc). This file is mandatory.
Input VV File
Input file names of the scattering matrix (_slc). This file is mandatory.
Parameters - Principal Parameters
The Following Features (flags) can be selected:
HH HH*
VV VV*
HV HV*
Re {HH VV*}
Im {HH VV*}
Re {HV VV*}
Im {HV VV*}
Re {HH HV*}
Im {HH HV*}
Span = HH+HV+VH+VV
Polarization Ratio = HH HH* / VV VV*
Linear Depolarization Ratio = HV HV* / VV VV*
Polarimetric Phase Difference HH VV
Polarimetric Coherence HH VV
Polarimetric Phase Difference HH HV
Polarimetric Coherence HH HV
Polarimetric Phase Difference HV VV
Polarimetric Coherence HV VV
Normalize
By setting this flag, the selected features are normalized by the Span feature.
Azimuth Looks
Number of looks in azimuth.
Range Looks
Number of looks in range.
Grid Size for Suggested Looks
The grid size, in meters, used to tune range and azimuth looks. If the other parameters are manually set, the grid size will not imply a change in their values.
Parameters - Global
It brings to the general section of the Preferences parameters. Any modified value will be used and stored for further processing sessions.
Parameters - Other Parameters
It brings to the general section of the Preferences parameters. Any modified value will be used and stored for further processing sessions.
Output Files
Output root name
Root file name. This file is mandatory.
_span
Span feature with the associated header files (.sml, .hdr).
_hh_hh
HH HH* feature with the associated header files (.sml, .hdr).
_vv_vv
VV VV* feature with the associated header files (.sml, .hdr).
_hv_hv
HV HV* feature with the associated header files (.sml, .hdr).
_re_hh_vv
Re {HH VV*} feature with the associated header files (.sml, .hdr).
_im_hh_vv
Im {HH VV*} feature with the associated header files (.sml, .hdr).
_re_hv_vv
Re {HV VV*} feature with the associated header files (.sml, .hdr).
_im_hv_vv
Im {HV VV*} feature with the associated header files (.sml, .hdr).
_re_hh_hv
Re {HH HV*} feature with the associated header files (.sml, .hdr).
_im_hh_hv
Im {HH HV*} feature with the associated header files (.sml, .hdr).
_polrat
Polarization Ratio feature with the associated header files (.sml, .hdr).
_ldr
Linear Depolarization Ratio feature with the associated header files (.sml, .hdr).
Details specific to the Units of Measure and Nomenclature of the output products can be found in the Data Format section.
General Functions
Exec
The processing step is executed.
Store Batch
The processing step is stored in the batch list. The Batch Browser button allows to load the batch processing list.
Close
The window will be closed.
Help
Specific help document section.
Specific Function(s)
| Looks |
The most appropriate range and azimuth multi-looking factors are calculated. This calculation is performed by taking into account the Cartographic Grid Size, which is set in the relevant SARscape Default Values panel.
Task, SARscapeBatch object, SARscapeBatch script example
References ESA, Polarimetric SAR Interferometry tutorial