This system receives, processes
and distributes high resolution image data
obtained byEarth observation satellites.
This system was developed in order to provide
not only highly accurate image products
but also systematic and automatic operation.
This system currently supports the data
reception, processing and user-supports
for the following satellites.
This system is based on a multi-satellite
data handling capability and an easily expendable
architecture, so that only a data format interpretation
module is required for receiving and processing
data from an additional satellite.
Imaging Planning
Software - Interactive drag & drop image
- segment allocation
on a digital map
- Embedded orbit propagators
- Physical orbit, attitude and sensor
- modeling (calculation
of imaging
- start/end time
and rotation angle
- from the target
position)
- Automatic image segment
- allocation
according to given
- imaging orders
Reception Planning
Software - Multiple schedule ingestion and
- automatic scheduling
- Automatic invocation of data
- receiving and recording software
- at the start
time of each schedule
- Periodic and automatic system
- health check
(preventive
- monitoring)
- Automatic storage space
- management
- Data backup and restore
- GPS time synchronization
Data Receiving
Card - PCI-type host bus adaptor
- Serial-to-parallel data conversion
- Internal memory buffering and
- interrupt generation
- DMA data transfer to host computer
- main memory
- Up to 400 Mbps input data
Real-time Data
Processing Software - Software-based real-time
- processing
---- Frame synchronization
---- I/Q phase
detection
---- Descrambling
---- De-packatization
---- Image data
extraction
- Real-time moving window display
- (MWD)
---- Real-time
histogram
-----equalization
----Direct-X
graphic engine
- MWD playback
---- Play/pause/rewind
---- Arbitrary
data positioning
---- Interactive
histogram control
---- Data saving
as JPEG
Catalog Browse
Software
- Web-based for general users
- Various search methods
- (coordinates,
map, etc)
- Metadata detail display
- Thumbnail and browse image
- Image boundary overlay on map
- Ingestion of imaging orders and
- process orders
- Order processing status monitoring
Catalog and
Product Generation Software - Catalog generation
----- Metadata,
browse images,
----- thumbnail
images
----- Automatic,
semi-automatic,
----- manual
cloud assessment
- Whole pass processing and
--selective image
processing
- Various processing levels
----- Radiometrically
corrected
----- Systematically
geocoded
----- Precision
geocoded (GCP)
----- Ortho-rectified
(GCP, DEM)
- Automatic control of process
- priorities
KOMPSAT-1
(sun-synchronous polar orbit)
