Standard OBC (On Board Computer)
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Standard OBC (On Board Computer)
OBC is the satellite control computer that provides platforms for the flight software operating a satellite,
and this controls the satellite by collection and storage of Bus and Payload’s full state data and transmits the data to the ground station.
In the past, OBC was developed by types of satellite, such as LEO, a GEO, exploration satellite and Lander respectively. However,
OBC development in nowadays tends to modularize each function and standardize communication interfaces because of the cost-efficiency and risks.
We are developing the Standard OBC applying to LEO, a GEO, exploration satellite and Lander in a series of Korea space project.
Standard OBC specifications are as follows.
Item | Specification |
---|---|
Processor | LEON (AT697) |
Internal interface | SpaceWire CAN Bus |
I/O interface | Bi-level, Analog, Pulse |
Mass memory capacity | 2Gbit |
Uplink TC data rate | 2kbps |
Downlink TM data rate | Real-time mode: 4.096kbps Play-back mode: 1.5Mbps |
Weight | < 20kg |
Size | < 350mm x 280mm x 270mm |
Power consumption | < 80W |
Main features | -High performance & expandability -Modular type system architecture -Standard internal communication interface -Hot / cold redundancy |