CDCBERS

Description

Parameters

Parameter descriptions

TIFF or XML File Name

Specifies the path and file name of the input TIFF or XML file.

Output: Output file name

Specifies the name of the PCIDSK file that will receive the processed data. This file will be 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 satellite orbital ephemeris layer.

Create Linked File

If this parameter is set to YES, the output port is created in such a way that the image channel is linked to the original input file (TIFF File Name). This option can only be used if you want one band (channel) to be connected.

CD Input Layer(s) List

Specifies the list of channels or layers to read from the CD.

For each channel, a corresponding channel is created in the output PCIDSK file.

Up to 9 channels can be specified. Duplicate channels are NOT allowed.

• VNIR 1, 2, 3N are 15m resolution with file size of 4100 x 4200
• VNIR 3B is 15m resolution with file size of 5000 x 4600
• SWIR data is 30m with file size of 2048 x 2100
• TIR data is 90 with file size of 700 x 700
• Store images of different resolutions and file size into separate files.
• For VNIR 3N data, specify CDIC = 31
• For VNIR 3B data specify CDIC = 32

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.

If TEX1 (File Description) is not specified, the File Header fields in the generated output PCIDSK image database hold the following information:

• FH5 receives the tape ID, satellite sensor, and satellite track
• FH7.1 receives the acquisition date and scene center (longitude and latitude, in decimal degrees)
• FH7.2 is empty

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

CDCBERS reads CBERS TIFF file format data when satellite orthorectification is required. CDCBERS automatically creates a PCIDSK file, reads all the requested imagery channels from CD, and saves the satellite path information in a segment. Output from CDCBERS is used in OrthoEngine.

The following format is supported:

CBERS 1A

CDCBERS 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.

If the LINKFILE (Create Linked File) parameter is set to NO, the output file is automatically created with the dimensions required to hold all of the requested data. Ensure that sufficient disk space is available before running CDCBERS. If LINKFILE is set to YES, the image channel is not created; instead, it is linked to the image channel of FILI, and only one band can be linked.

The OutputOrbit port receives the orbit layer that contains the orbital information.

Acknowledgements

PCI Geomatics wishes to acknowledge the assistance of Dr. Thierry Toutin for this software.

References

Toutin, Th. "Analyse math\u00c3\u00a9matique des possibilit\u00c3\u00a9s cartographiques du syst\u00c3\u00a8me SPOT". Th\u00c3\u00a8se de Docteur-Ing\u00c3\u00a9nieur en Sciences G\u00c3\u00a9od\u00c3\u00a9siques, ENSG, Paris, France, 1985: 1-163.

Toutin, Th. and Carbonneau Y. "La multi-st\u00c3\u00a9r\u00c3\u00a9oscopie pour les corrections d'images SPOT-HRV", Canadian Journal of Remote Sensing, Vol. 15, No. 2 (September 1989): 110. (Also available in English from the Canada Centre for Remote Sensing.)