CBERS-4

Long name	CBERS-4
Short name	CB4
Sensor type	The CBERS-4 satellite carries four cameras: PanMux Camera (PanMUX) Multispectral Camera (MUXCam) Infrared Medium Resolution Scanner (IRS) Wide Field Imaging Camera (WFI)
Platform	CBERS-4
Key file name (use to open data set)	*.xml
Supported file extensions	.txt, .tif, .jpg, .xml
Sections	Data product name and description Distribution disk files Returned data for supported format References

Data product name and description

The CBERS-4 satellite carries four cameras:

MUXCam, a multispectral (MS) camera
PanMUX, a panchromatic (PAN) imager
IRS, a medium-resolution infrared scanner
WFI, a wide-field imaging camera

Note: The information provided herein is based on the data distributor's documentation cited under References.

Sensor	Spectral bands: Spectral range (nm)	Spatial resolution (m)* (spectral resolution)	Maximum image dimensions (Across track x along track, km)	Swath width (km)
MUXCam	450 - 520 (blue) 520 - 590 (green) 630 - 690 (red) 770 - 890 (NIR)	20	N/A	120
PanMUX	510 - 730 (PAN) 520 - 590 (green) 630 - 690 (red) 770 - 890 (NIR)	N/A 10 (MS) 5 (PAN)	N/A	60
IRS	500 - 900 (PAN) 1550 - 1750 (SWIR) 2080 - 2350 (SWIR) 1040 - 1250 (TIR)	40 (PAN, SWIR) 80 (TIR)	N/A	120
WFI	450 - 520 (blue) 520 - 590 (green) 630 - 690 (red) 770 - 890 (NIR)	64 (nadir)	N/A	866

* Resolution is always nadir position unless noted otherwise.

CBERS04 image data is available in one processing level:

Level L2

Processing level	Horizontal accuracy (m)	Description/notes
L2	N/A	N/A

Distribution disk files

Depending on the CATALYST Professional program you use, you may be prompted to load either the multispectral (MS) or panchromatic (PAN) data. For example, in CATALYST Professional Focus, in the File Selector window, after you select the *.xml file you may be prompted to select MS or PAN when the data type is IRSCAM. In CATALYST Professional EASI, Python, or in another text-based program, the input file name can have the following formats:

CB04-IRS-372-56-20160513-L20002834231.XML-MS
CB04-IRS-372-56-20160513-L20002834231.XML-PAN

Enter the full path and file name plus -MS for a multispectral image or -PAN for a panchromatic image.

When the data type is PanMUX, MUXCam, or WFICam, the data set opens directly when you open the *.xml file.

Warning: Data sets for this sensor are organized in a specific folder structure on disk. GDB uses this structure and the file names to identify the data product type. Do not alter the folder structure or any file names prior to data ingestion to ensure the image data and auxiliary information are imported correctly.

When opening a CBERS-4 data set, the files read by GDB are as described in the following tables. You must open the key file that corresponds to the data type for GDB to read the information.

Each sensor type, including the the distributed files, is desribed in the following tables.

MUXCam

File name	Format	Required	Contents/details
*.xml	Extensible Markup Language	Yes	Key file name. Use this file to open the data set.
*.thumb.jpg	JPEG	Optional	Thumbnail image.
*.tif	GeoTIFF	Yes	TIFF world file. Contains information on geographic information systems.
*.jpg	JPEG	Yes	JPEG image file. Contains imagery information.

PanMUX

File name	Format	Required	Contents/details
*.xml	Extensible Markup Language	Yes	Key file name. Use this file to open the data set.
*.thumb.jpg	JPEG	Optional	Thumbnail image.
*.tif	GeoTIFF	Yes	TIFF world file. Contains information on geographic information systems.
*.jpg	JPEG	Yes	JPEG image file. Contains imagery information.
*SatAngle.txt	ASCII	Yes	Contains satellite-angle data for corresponding images.

IRS

File name	Format	Required	Contents/details
*.xml	Extensible Markup Language	Yes	Key file name. Use this file to open the data set.
*.thumb.jpg	JPEG	Optional	Thumbnail image.
*.tif	GeoTIFF	Yes	TIFF world file. Contains information on geographic information systems.
*.jpg	JPEG	Yes	JPEG image file. Contains imagery information.

WFI

File name	Format	Required	Contents/details
*.xml	Extensible Markup Language	Yes	Key file name. Use this file to open the data set.
*.thumb.jpg	JPEG	Optional	Thumbnail image.
*.tif	GeoTIFF	Yes	TIFF world file. Contains information on geographic information systems.
*.jpg	JPEG	Yes	JPEG image file. Contains imagery information.
*SatAngle.txt	ASCII	Yes	Contains satellite-angle data for corresponding images.

Returned data for supported format

CBERS-4 data can be opened directly in its raw vendor format or imported into a PCIDSK (*.pix) file by using the key file name. For optimal processing, use the PCIDSK format.

The data structure, after it is opened by GDB, is as described in the following table.

Data product	Data returned	Details
CBERS-4 (IRS sensor) 40 m NIR	3 x [8U] raster channels 1 x [ORB] orbit segment 1 x [TEX] main product annotation	NIR, SWIR bands.
CBERS-4 (IRS sensor) 80 m TIR	1 x [8U] raster channel 1 x [ORB] orbit segment 1 x [TEX] main product annotation	TIR band.
CBERS-4 (MUXCam sensor) 20 m MS	4 x [8U] raster channels 1 x [ORB] orbit segment 1 x [TEX] main product annotation	Blue, green, red, NIR bands.
CBERS-4 (PanMUX sensor) 10 m MS	3 x [8U] raster channels 1 x [ORB] orbit segment 1 x [TEX] main product annotation	Green, red, NIR bands.
CBERS-4 (PanMUX sensor) 5 m PAN	1 x [8U] raster channel 1 x [ORB] orbit segment 1 x [TEX] main product annotation	PAN band.
CBERS-4 (WFI sensor) 73 m MS	4 x [16U] raster channels 1 x [ORB] orbit segment 1 x [TEX] main product annotation	Blue, green, red, NIR bands.

References

For more information about CBERS-4, go to cbers.inpe.br.

CBERS-3 & 4 (China-Brazil Earth Resources Satellite), Sharing Earth Observation Records, eoPortal Directory. European Space agency (ESA).
For more information, or to download a copy of the preceding, go to eoportal.org.

Satellite: CBERS-4, Observing Systems Capability Analysis and Review Tool (OSCAR). World Meteorological Organization.
For more information, or to download a copy of the preceding, go to: wmo.int.