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Purpose

 

Each one of the SAR geometry tomogram layers, generated at the end of the second inversion step, can now be geocoded. Each layer will be projected onto the cartographic reference grid selected by the user. The projection will be performed using for each layer the associated constant height above ellipsoid.  

 

Technical Note

 

The output results consist of geocoded products, which correspond to the outputs of both the step 1 and the step 2. These are:

 

•Ref_GCP_geo, shape file corresponding to the Reference Points of the highest MuSigma values (i.e. those used for the phase offset removal) automatically selected during the step 1.

•SubAreas_geo, shape file corresponding to the sub areas estimated according to the "Area For Single Reference Point" parameter.

•mean_geo, SAR Intensity average image and associated header files (.sml, .hdr).

•Meta file (_meta), used to load at once the geocoded tomogram layers.

 

 

Input Files

 

Auxiliary file

Reference file generated as output of the "Connection Graph" step and possibly updated afterwards. This file is mandatory.

 

DEM/Cartographic System

 

Digital Elevation Model file

Name of the Digital Elevation Model file. This should be referred to the ellipsoid. This file is optional. In case it is omitted, the ellipsoidal height and the relevant cartographic reference system, must be entered.

 

Output Projection

In case that the Digital Elevation Model is not used, the following parameters are compulsory to define the Cartographic System:

 

State

Definition of the country or general projection systems.

 

Projection

Definition of the projection system of the selected State. In case that a general projection system is selected in State, the Projection is automatically set.

 

Ellipsoid

Definition of the ellipsoid. This is chosen according to the selected State and Projection.

 

Hemisphere

Definition of the hemisphere. This is chosen according to the selected State and Projection.

 

Zone

Definition of the zone. This is chosen according to the selected State and Projection.

 

Datum Shift Parameters

Definition of the datum shift parameters. These are chosen according to the selected State and Projection.

 

Reference Height

In case that the Digital Elevation Model is not used, a constant ellipsoidal height must be provided. Default Reference Height is 0.

 

Parameters - Principal Parameters

 

X Dimension (m)

The grid size of the output data in Easting (X)  must be defined; the default unit of measure is meters.

Note that - for the Geographic projection - if values higher than 0.2 are entered they will be considered as metric units and then automatically, and roughly, converted from meters to degrees; if values lower than 0.2 are entered they will be considered as degree and used as such without any conversion.

 

Y Dimension (m)

The grid size of the output data in Northing (Y)  must be defined; the default unit of measure is meters.

Note that - for the Geographic projection - if values higher than 0.2 are entered they will be considered as metric units and then automatically, and roughly, converted from meters to degrees; if values lower than 0.2 are entered they will be considered as degree and used as such without any conversion.

 

Z Dimension (m)

The grid size of the output data in the elevation direction must be defined; the default unit of measure is meters.

 

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 - Geocoding

 

It brings to the  geocoding section of the Preferences parameters. Please note that this set of parameters refers only to horizontal (i.e. latitude/northing and longitude/easting) properties. Any modified value will be used and stored for further processing sessions.

 

Parameters - Other Parameters

 

Z Dimension (m)

The grid size of the output tomogram in the elevation direction already mentioned in the description of the principal parameters.

 

Output Files

 

Geocoding directory

 

This directory contains the following products:

 

Tomogram_geocoded_layers_list_meta: metafile including the list of all tomogram layers. Under the geocoding directory the user will find the Tomogram_geocoded_layers subdirectory under which the different layer references collected in the metafile are actually stored.

 

Mean_geo: geocoded mean of the different input intensity images forming the interferometric stack.

 

Ref_GCP_geo.shp and SubAreas_geo.shp

Geocoded shapefile of the phase reference points and contours of the areas defining the subdivision of the footprint.

 

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)

 

None.        

 

References

 

None.