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Purpose

 

Standard products, acquired by ERS-1 and ERS-2 satellites, are imported into the SARscape Data Format for further processing.

 

Technical Note

 

In case of RAW data, import is carried out within the Focusing module.

 

CEOS ("default" version and "NRSC" version) and ENVISAT formats are both supported.

 

Orbit File

These data (precise "PRC" or preliminary "PRL" orbits), which are made available through the DLR ftp server, provide precise orbital information for ERS-1/2 acquisitions.

 

Access to these data can be required to the ESA Earth Observation Help Desk. The precise orbital data, which are typically available in Zip format, must be unzipped before they are entered as processing input. The file name refers to the start date/orbit validity.

 

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

 

XCA (required only for ERS products in ENVISAT format)

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 ERS 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.

 

Special formatting parameters characterize data coming from some archive and processing facilities; these are selectable, by using the "version" pull down menu, for the following stations:

 

 

 

 

It must be finally noted that some processing problems, due to data formatting issues, can be experienced using products generated at ACRES (Australia) station.  

 

Supported Products

 

ERS PRI                Multi-look Ground Range.

ERS SLC                Single Look Complex.

 

Further information at http://earth.esa.int/object/index.cfm?fobjectid=4001

 

 

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.