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Purpose

 

Information useful for calibration purposes are extracted from the data. The tool is intended for checking SAR data calibration parameters by analysing the signal response on corner reflectors.

 

Technical Note

 

Only slant range data are admitted. The response of the SAR signal impulse, which comes from a target on the ground, is calculated both in azimuth and range direction. Results are shown on application graphs; calibration relevant figures are also displayed on screen.

 

 

Input Files

 

Input file

Input file name of the data to examine. When opening the widget, the user is prompted to select an opened image in the ENVI Layer Manager. This file is mandatory.

 

Parameters

 

Azimuth (row)

Azimuth co-ordinate of the pixel to examine.

 

Range (column)

Range co-ordinate of the pixel to examine.

 

Output Files

 

_pta.txt        

List of parameters extracted and corresponding values.

 

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.

 

Close        

The window will be closed.

 

Help

Specific help document section.

 

 

Specific Function(s)

 

Position

The file co-ordinates (row and rolumn), corresponding to the cursor location, is identified.

 

References

 

ESA, 2002: Quality Measurements Definition for ASAR Level 1 Products - Technical Notes; Issue 1; pp. 16.