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Purpose

 

SAR RAW data (level 0 product) acquired by ERS-1/2 must be focused to generate Single Look Complex (SLC) data, which can be used as first input for data processing in any other module. This functionality enables to mosaic consecutive frames acquired along the same satellite orbit, before carrying on the data focusing.

 

Technical Note

 

Input data in CEOS format or in ENVISAT format are both supported.

 

The following sequential processing steps are performed:

 

1.Data Import.

2.RAW data mosaic.

3.Data focusing.

 

Technical details relevant to the data focusing process and algorithm are provided in the module overview.

 

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, they do not have to be inputted in the focusing processing panel since they are automatically retrieved by the program.

 

 

Input Files

 

Input Orbit File

This file is intended to enter precise orbital information. This file is mandatory.

 

Input File list

Input file list of ERS raw data. This file is mandatory.

 

Parameters - Principal Parameters

 

None.

 

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 File

Output file name of the Single Look Complex data. This file is mandatory.

 

_slc

Single Look Complex data and corresponding header files (.sml, .hdr).

 

_par.sml        

Xml file containing temporary processing parameters.

 

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

 

Refer to the module overview.