MIMAN is a CubeSat for monitoring fine dust on the Korean Peninsula. Fine dust, a type of aerosol, is one of the factors of climate change, and has been designated as a group 1 carcinogen by the WHO. Accordingly, research on the generation and flow of the fine dust is being actively conducted around the world. To study the spatiotemporal distribution of fine dust, observation over a wide area using satellites is required. Satellites of South Korea that provides fine dust observation data include GEO-KOMPSAT 2B (GK-2B), a geostationary satellite launched in 2020. When observing fine dust in geostationary orbits, although the temporal resolution is high, only a specific area can be observed, and it has the disadvantage of securing relatively low spatial resolution compared to low orbits. If a low-orbit fine dust observation system that can capture high spatial resolution is established, observation data for the entire world can be provided. In addition, data with high spatial resolution can be utilized to remove clouds from data with relatively low spatial resolution. Currently, Korea does not have a low-orbit satellite system capable of observing the East Asian region with high spatial resolution. If this is built as a CubeSat-based platform, it will be possible to increase the accessibility to observation data. With this goal in mind, the Cubeset Yonsei team at Yonsei University developed the CubeSat MIMAN.
MIMAN is a 3U cube satellite with dimensions of 10 cm X 10 cm X 34 cm. It is equipped with an optical camera for CubeSat and antennas for communication, and transmits images with a resolution of 200 m or less in the area of ​​400 km X 400 km above the West Sea once every two days to the ground. The image sent down to the ground is provided to the fine dust research team after appropriate correction so that it can be used as research data.

 

Satellite constellation with small or microsatellites is a rising concept in the recent space industry. Unlike the traditional single satellite mission, satellite constellation can achieve rapid revisit time as well as enhanced coverage ability, which makes the scope of satellite mission goes further. Designing orbital patterns for satellite constellation has been studied to obtain efficient configuration for mission-specific objectives. Also, constellation deployment and maintenance strategy are one of the essential parts for effective mission operation.

 

As the miniaturization of satellites progresses, Earth observation using microsatellites is emerging worldwide.
The cost of producing the micro-satellites has been greatly reduced compared to the existing satellites, and efficient mass production is possible through platform development.
In addition to the sale of mass-produced platforms for satellites, the satellite market is becoming active with the provision of Earth observation service.
This study aims to lay the groundwork for platform development for satellite mass production by designing the micro-optical satellite and micro SAR satellite system according to global satellite development trend.
Micro-optical satellites are expected to build a low-cost Eart observation system.
Micro SAR satellites are expected to be able to build all-weather observation systems that are not affected by the observation environment.

• Development of control algorithm for spacecraft rendezvous and docking
• Development of spacecraft relative pose estimation algorithm based on vision sensor
• Development of GNC system for autonomous rendezvous and docking
• Verification of GNC system using Formation Flying Testbed

  

  

  

  

• SNIPE (Small-scale magNetosphere and Ionosphere Plasma Experiment) mission observing small-scale plasma phenomena for studying magnetic field on Earth
• Mission scenario design of Formation Flying
• Develop and verification of Nanosats formation flying algorithm
• Control relative distance between Nanosats from 10 km to over 100 km

Design interplanetary trajectory to target asteroid Develop techniques to deflect a potentially hazardous asteroid