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Purpose

 

Standard products are imported into the SARscape Data Format for further processing.

 

Technical Note

 

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In case the input is a list of files, all products must be of the same type (refer to the "Supported Products" section) and all mandatory inputs (e.g. Orbit files, XCA files, etc.) must be provided in the same order from the first to the last imported product.

 

It must be noted that the input list is not allowed for Wide Swath Single look complex products (WSS).

 

DORIS

DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) data provide precise orbital information for ENVISAT ASAR. Two versions of DORIS data are available:

 

-The VOR (Verified ORbits) are the most precise ones, but they are made available not earlier than one month after the actual satellite acquisition.

-The POR (Precise ORbits) are slightly less precise than the VOR, but they are made available together with the ASAR data.

To download DORIS data follow the instruction provided at the relevant ESA web page: https://earth.esa.int/eogateway/catalog/envisat-doris-precise-orbit-state-vectors-dor-vor_ax-.

 

If the relevant DORIS files are already stored in an existing folder, which has been defined as DORIS Directory (Preferences common), they do not have to be inputted in the import processing panel since they are automatically retrieved by the program.

 

XCA

Auxiliary ASAR file containing external calibration data. This file is delivered with the SARscape installation package and it is read in a fully automatic way, hence typically there is not need to enter it as input. However, in case the most recent XCA files are not included in the installation package, a warning message will appear advising to download this file from the relevant ESA web site. Once the missing XCA file(s) have been downloaded, the specific ASAR acquisitions must be re-imported by either inputting the newly downloaded files (XCA input list) or by copying these files under the ".../SARMAP SA/SARscape X.X.XXX/description_files" directory.

 

Supported Products

 

 

 

Input Files

 

Input File list

Input file name(s) of the original data. These files are mandatory.

 

Parameters - Principal Parameters

 

Data Type

Specify acquisition mode and product type relevant to the data to import.

 

Apply Calibration Constant

The calibration constant is applied (if available).

Note: this has no effect of phase values.

 

Rename The File Using Parameters        

If set to true, only relevant information will be copied from the input name(s) to the output name(s), the full root name otherwise.

 

Fill dummy during import

Possibility to replace invalid backscatter pixel values with random low values.

 

Parameters - Global

 

It brings to the general section of the Preferences specific 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 file list

Output file name(s) of the imported data. These files are mandatory.

 

Root name of the imported file(s) and associated header files (.sml, .hdr). Specific file suffixes are added according to the data type.

 

.shp

Shape file and associated header files (.sml, .hdr) containing the image perimeter in geographic co-ordinates.

 

.kml

ASCII file containing the image perimeter in geographic co-ordinates. Double clicking on this file will automatically position the boundaries of the scene into the Google Earth environment.

 

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.

 

See Also

 

Task, SARscapeBatch object, SARscapeBatch script example

 

References

 

None.