∎ STSAT-3

The STSAT-3 is a low Earth orbit satellite used for space observation and space technology verification in a sun-synchronous orbit of altitude 600km. The main MIRIS (Multi-purpose Infra-Red Imaging System) payload conducts infrared observation of the earth and space while the sub-payload, COMIS (COMpact Imaging Spectrometer), monitors changes in the earth environment.

Additionally, STSAT-3 uses advanced space technologies such as lightweight composite materials, a Hall thruster, an array antenna, Lithium-Ion Batteries, and a multi-functional structure.

---

Objectives
- To conduct cosmic infrared background observation and earth exploration
- To conduct infrared earth observation, atmosphere observation and environment monitoring
- To verify space technologies and conduct experiments to develop next-generation technologies
- To develop and test next-generation core space-based technology for application-level satellites Key Specifications

Orbit	inclination 98.18 ˚, altitude 700km (Sun-synchronousOrbit)
Weight	170kg
Power Rating	300W @ EOL
Attitude Control	3-axis stabilization
Communication (Transfer Speed)	S-band Uplink: 9.6kbps S-band Downlink: 38.4kbps X-band Downlink: 10Mbps
Main Computer	Leon3
Core Technologies	Li-Ion Battery Multi-Functional Structure Made of Composite Materials High Performance on-board Computer Compact Solar Power Controller Electrical Thruster
Payloads	Multi-purpose IR Imaging System (MIRIS) COMpact Imaging Spectrometer (COMIS)