CDEROS

Description

CDEROS reads EROS A/B imagery from an EROS-format CD when satellite orthorectification is required. CDEROS automatically creates a PCIDSK file, reads all the requested imagery channels from CD, and saves the satellite path information to a segment. The output file from CDEROS is used as input to CATALYST Professional OrthoEngine.

Parameters

Name	Type	Length	Value range
Input EROS File Name *	String	1 -
Output: Output file name *	Raster port	1 -
OutputOrbit: Output: satellite orbital ephemeris layer *	ORB port	1 - 1
CD Input Layer(s) List *	Integer	1 - 16
File Description	String	0 - 1
Report	String	0 - 192	See parameter description

* Required parameter

Parameter descriptions

Input EROS File Name

Specifies the full path and file name of the EROS binary 1A file to be processed.

Output: Output file name

Specifies the name of the PCIDSK file that will receive the processed data. The output file is created automatically and must not already exist.

OutputOrbit: Output: satellite orbital ephemeris layer

Specifies the name of the output file that will contain the output satellite orbital ephemeris layer.

CD Input Layer(s) List

Specifies the list of channels or layers to read from the CD. Up to 16 channels may be specified.

For each channel, a corresponding channel is created in the output PCIDSK file. Duplicate channels are not allowed.

If this parameter is not specified, all channels will be read from the file.

File Description

Optionally specifies a line of text that describes the file. Typically, this contains information that identifies the location of the data and the CD reference number.

Report

Specifies where to direct the generated report.

Available options are:

• LOG: generates a report on the terminal (default)
• <modulename.RPT>: appends a report to the module's RPT file
• DISK: generates a report on file "IMPRPT.LST"

Details

CDEROS is part of the satellite orthorectification component. It reads EROS A or B file format data from a CD when satellite orthorectification is required. The corresponding metadata file with a ".pass" extension must exist in the same directory. CDEROS automatically creates a PCIDSK file, reads all the requested imagery channels from the CD, and saves the satellite path information in an orbit segment. Output from CDEROS is used as input in CATALYST Professional OrthoEngine.

CDEROS extracts from the CD the geographic coordinates of the scene center and the four corner points. The values are stored in the output orbit segment. These points can be used as ground control point (GCP) input for an approximate correction, which is useful when GCPs are unavailable for an area. Note, however, that using geographic coordinates may not produce very accurate results.

Acknowledgements

PCI Geomatics acknowledges the assistance of Dr. Thierry Toutin for this software.

References

Toutin, Th. "Analyse mathématique des possibilités cartographiques du système SPOT". Thèse de Docteur-Ingénieur en Sciences Géodésiques, ENSG, Paris, France, 1985.

Toutin, Th. and Carbonneau Y. "La multi-stéréoscopie pour les corrections d'images SPOT-HRV", Canadian Journal of Remote Sensing, Vol. 15, No. 2 (September 1989) p110. (Also available in English from the Canada Centre for Remote Sensing.)