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<< Click to Display Table of Contents >> Basic Module - Intensity Processing - Geocoding - Point Conversion Map to Slant Range |
  
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<< Click to Display Table of Contents >> Basic Module - Intensity Processing - Geocoding - Point Conversion Map to Slant Range |
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Purpose
The usual way is to convert – based on a range-Doppler approach – slant or ground range SAR data into a cartographic reference system. However, in some cases the inverse transform is requested, in particular when points – for instance Ground Control Points – in a cartographic reference system should be projected into the slant or ground range SAR geometry; this is the purpose of this functionality.
Technical Note
None.
Input Files
Slant/Ground range file
File name of the slant or ground range data, onto which the point shall be converted. This file is mandatory.
DEM/Cartographic System
Output Projection
The following parameters are compulsory to define the Cartographic System:
State
Definition of the country or general projection systems.
Projection
Definition of the projection system of the selected State. In case that a general projection system is selected in State, the Projection is automatically set.
Ellipsoid
Definition of the ellipsoid. This is chosen according to the selected State and Projection.
Hemisphere
Definition of the hemisphere. This is chosen according to the selected State and Projection.
Zone
Definition of the zone. This is chosen according to the selected State and Projection.
Datum Shift Parameters
Definition of the datum shift parameters. These are chosen according to the selected State and Projection.
In case that the Digital Elevation Model is not used, a constant ellipsoidal height must be provided. Default Reference Height is 0.
Cartographic Parameters
The reference parameters for some projection systems (e.g. Stereographic, Polar Stereographic, Gnomonic, Mercator, Miller, Albers, etc.) can be set.
Parameters - Principal Parameters
Easting / X Coordinate
Easting or X coordinate in meter or degree depending upon the selected reference system.
Northing / Y Coordinate
Northing or Y coordinate in meter or degree depending upon the selected reference system.
Height / Z Coordinate
Ellipsoidal height in meter.
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.
Outputs
Slant or ground range co-ordinates (range, azimuth). The values are shown on screen.
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 Frei U., C. Graf, and E. Meier: "Cartographic Reference Systems, SAR Geocoding". Data and System, Wichmann Verlag, 1993. Meier E., Frei U., and D. Nuesch: "Precise Terrain Corrected Geocoded Images, SAR Geocoding". Data and System, Wichmann Verlag, 1993.