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<< Click to Display Table of Contents >> Focusing - ALOS PALSAR-1 Import and Focusing |
  
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<< Click to Display Table of Contents >> Focusing - ALOS PALSAR-1 Import and Focusing |
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Purpose
SAR RAW data (level 1.0 product) acquired by ALOS PALSAR must be focused to generate Single Look Complex (SLC) data, which can be used as first input for data processing in any other SARscape module.
Technical Note
PALSAR-1 RAW data in CEOS standard format are required.
The supported acquisition modes are:
ERSDAC data are supported as frame based or orbit-segment based (i.e. long) products.
It must be noted that Single Look Complex data, focused with this module, are generated with zero-Doppler annotation. Single Look Complex data provided by JAXA are generated with non zero-Doppler annotation.
Input Files
Input Leader file
File name of the original leader data (prefix "LED" for JAXA products; suffix "ldr" for ERSDAC products). This file is mandatory.
Input Co-Polar
File name of the original PALSAR RAW data. Depending on the chosen Data Type, the input has to be modified accordingly. It is mandatory to give either HH or VV data as input in the JAXA case. In the ERSDAC case, the mandatory input is the "raw" file only.
Input Cross-Polar
File name of the original PALSAR RAW data. Depending on the chosen Data Type, the input has to be modified accordingly. It is mandatory to give either HV or VH data as input in the JAXA case.
File name of the original PALSAR RAW data. Depending on the data provider, the following data structure can be found:
| - | JAXA products - The number of data files (prefix "IMG") may vary from 1 (single polarization) to 4 (full polarization). |
| - | ERSDAC products - One data file (suffix "raw"), which contains 1 or more polarizations, is provided. |
When dual or full polarization JAXA products are used, it is suggested to enter the HH polarization as Input Data file; this is because the Doppler Centroid is better estimated in the HH polarization.
These files are mandatory.
Parameters - Principal Parameters
Data Type
Specify the satellite/sensor relevant to the data to import.
Rename The File Using Parameters
If set, only relevant information will be copied from the input name(s) to the output name(s), the full root name otherwise.
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 focused data. In case of multi-polarization data, a suffix corresponding to the specific polarization is added to the name of each output file. This file is mandatory.
_slc
Zero-Doppler annotated Single Look Complex data and corresponding header files (.sml, .hdr).
.shp
Shape file 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.
SARscapeParameterExtracted
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.
Task, SARscapeBatch object, SARscapeBatch script example
References Refer to the module overview.