Long name | Kompsat-3 |
Short name | KO3 |
Sensor type | Electro-Optical Multi-Spectral Camera (MSC), High-resolution pushbroom imager |
Platform | Kompsat-3 |
Key file name (use to open data set) | *_aux.xml |
Supported file extensions | .xml, .tif, and .jpg |
Sections |
Data product name and description |
Data product name and description
Spectral bands: |
Spatial resolution (m)* |
Maximum image dimensions |
Notes |
---|---|---|---|
MS1 (Blue): 450 - 520 |
K03 MS: 2.8 (2.0)+ (14-bit) |
Strip mode (mono): 16 x 4000 |
Maximum off-nadir pointing angle (pitch): ±30 degrees. |
* Resolution is always nadir position unless noted otherwise.
Kompsat-3 image data is available at sensor ground sample distance (GSD) of 2.8 meters MS, 0.7 meters PAN or product GSD of 2.0 meters MS, 0.5 meters PAN.
Processing level | Horizontal accuracy (m) | Description/notes |
---|---|---|
1R | 1R (Basic): 285 |
Level 1R is corrected for radiometric and sensor distortions. The difference of relative radiometric response between detectors is corrected and internal detector geometry and misregistrations between detectors are corrected, when applicable. |
1O | 70 | Level 1O is known as "ortho-ready". It is corrected for geometric distortions and projected to UTM. Level 1O includes all radiometric corrections and sensor corrections applied to Level 1R processing. Optical distortions and terrain effects are corrected by using average height over the region. The final product is projected to UTM coordinate. |
1G | 70 | Level 1G is corrected for geometric distortions and projected to UTM. Level 1G includes all radiometric corrections and sensor corrections applied to Level 1R processing. Optical distortions are corrected and terrain effects are corrected using a coarse digital elevation model (DEM); namely, SRTM DEM for Level 1R. The final product is projected to UTM coordinate. |
A KOMPSAT-3 data set is organized in a specific folder structure on disk. GDB uses this folder structure and the file names to identify the data product type.
When opening a Kompsat-3 data set, the files read by GDB are as described in the following table.
File name | Format | Required | Contents/details |
---|---|---|---|
*_aux.xml | Extensible Markup Language | Yes | Key file name. Contains metadata that applies to the data set. |
*.tif | GeoTIFF | Yes | Image data, one file per spectral band. With large panchromatic images, the data is distributed tiled (one image file per tile). |
*.til | Text | No | Tile map file for panchromatic images greater than 4 GB. |
*.rpc | Text | Yes | Rational function model, one file per spectral band. |
Returned data for supported format
KOMPSAT-3 data can be opened directly in its raw vendor format or imported into a PCIDSK (*.pix) file using the key file name (*_aux.xml). 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/notes |
---|---|---|
1R (Multispectral) |
4 x [16U] raster channels |
N/A |
1R (Panchromatic) |
1 x [16U] raster channel |
N/A |
1G (Multispectral) |
4 x [16U] raster channel | N/A |
1G (Panchromatic) |
1 x [16U] raster channel | N/A |
KOMPSAT-3 Image Data Manual. Korea Aerospace Research Institute, Satrec-Initiative Co., Ltd. V1.1, 2014-08-01. 50 pages.
KOMPSAT-3 Image Data Manual. Korea Aerospace Research Institute, Satrec-Initiative Co., Ltd. V1.2, 2015-07-01. 51 pages.
KOMPSAT-3 Image Data Manual. Korea Aerospace Research Institute, SI Image Services Co., Ltd. V2.0, 2017-01-01. 60 pages.
For more information, including copies of the preceding publications that you can download, go to the EO Sharing Earth Observation Resources eoPortal Directory website: directory.eoportal.org.
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