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∎ STSAT-2
STSAT-2 was Korea’s first 100kg low Earth orbit satellite to be launched in the first domestically developed launch vehicle (KSLV-1). Unfortunately, both STSAT-2A, launched on Aug. 25, 2009, and STSAT-2B, launched on Jun. 10, 2010, failed at the orbital injection stage.
STSAT-2 utilized most of the experience and outcomes from the STSAT-1 project. The goals were to enhance performance and achieve further miniaturization.
STSAT-2 was a frame-type satellite structure and had been scheduled to test a range of core technologies including a composite material solar panel, Dual Head Star Tracker (DHST), CCD digital sun sensor, Pulsed Plasma Thruster (PPT), Compact on-board Satellite Computer, and X-band Transmitter.
- To operate a radiometer for earth and atmosphere monitoring
- To verify precise orbit and attitude determination technologies
- To develop and verify core satellite technologies
- To develop and operate world-class advanced observation devices
|
| Orbit |
inclination 80°, altitude 300×1500km |
| Size |
< 1m3 |
| Weight |
< 100kg (Including adaptor) |
| Power Rating |
160WⓐEOL |
| Attitude Control Method |
3-axis stabilization, 0.15 deg pointing accuracy |
Communication
(Transfer Speed) |
S-band Uplink: 9.6kbps
S-band Downlink: 38.4kbps
X-band Downlink: 10Mpbs
|
| Main Computer |
Power PC 603e |
| Core Technologies |
Dual Head Star Tracker(DHST)
Fine Digital Sun Sensor(FDSS)
Pulsed Plasma Thruster(PPT)
Electro-magnetic Torque(EMT)
Compact On-board Computer
X-band Transmitter
|
| Payloads |
Dual-channel Radiometers for Earth and Atmosphere Monitoring(DREAM)
Laser Reflector Array(LRA)
|
