<< Click to Display Table of Contents >> Navigation:  Help Content > Import Data  > Other Format > Import Data - Import GACOS

Purpose

 

This tool allows importing Generic Atmospheric Correction Online Service for InSAR and Interferometric Stacking processing (GACOS, http://www.gacos.net/).

 

Technical Note

 

This tool allows importing Generic Atmospheric Correction Online Service for InSAR (GACOS) data. GACOS utilises the Iterative Tropospheric Decomposition (ITD) model (Yu et al., 2017) to separate stratified and turbulent signals from tropospheric total delays, and generate high spatial resolution zenith total delay maps to be used for correcting InSAR measurements and other applications. For more details visit http://www.gacos.net/

 

 

Before importing the GACOS data make sure you requested and downloaded them from the online interface respecting the provider's policy.

Once the download from http://www.gacos.net/ is completed it is necessary to unzip the file .gz to get the .ztd in case of binary file or .ztd.tif in case of geoTIFF file format.

 

Supported Products

The SARscape import panel supports both geoTIFF and binary format (.ztd). It is strongly recommended to request the binary format to properly control the use of GACOS data (including the acquisition time).

 

 

Input Files

 

Input file list

Input file name(s) of the original GACOS data (.ztd, .ztd.tif). These files are mandatory.

 

Parameters - Principal Parameters

 

Generate Quick Look

By setting this flag the output file is generated also in Tiff or PNG format. These files are intended essentially for visualisation purposes. The extension "_ql" is automatically added to the output file name. PNG allows .kml files with transparent dummy values.

 

Quick Look Format

Select the format of the Quick Look (TIFF, PNG, TIFF and PNG). The Generate Quick Look flag must be set to TRUE.

 

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

 

None.

 

Output Files

 

The raster file and the corresponding  .hdr, .sml files. Moreover, the _ql.tiff, _ql.kml are created.

 

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.