Satrec Initiative Co., Ltd. (Satrec I; ) or SI is a South Korean

satellite A satellite or an artificial satellite is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting, navigation ( GPS), broadcasting, scient ...

manufacturing company headquartered in

Daejeon Daejeon (; ) is South Korea's list of cities in South Korea, fifth-largest metropolis, with a population of nearly 1.5 million. Located in a central lowland valley between the Sobaek Mountains and the Geum River, the city is known both as a ...

, South Korea The company was founded in 1999 by the engineers who developed the first Korean satellite ( KITSAT-1) at

KAIST KAIST (originally the Korea Advanced Institute of Science and Technology) is a national university, national research university located in Daedeok Innopolis, Daejeon, South Korea. KAIST was established by the Korean government in 1971 as the ...

SaTRec ( Satellite Technology Research Center). The company designs and builds

Earth observation satellite An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, me ...

s called SpaceEye-series, and it provides various space components, including high resolution electro-optical payloads and star-trackers. SI's first satellite was a Malaysian Earth observation satellite,

RazakSAT RazakSAT was a Malaysian Earth observation satellite carrying a high-resolution camera. It was launched into low Earth orbit on 14 July 2009. It was placed in a near-equatorial orbit that presents many imaging opportunities for the equatorial reg ...

launched in 2009. SI has two subsidiaries: SI Imaging Services (SIIS) is the exclusive image data provider of KOMPSAT-series, and SI Analytics (SIA) provides AI-native GEOINT solutions for satellite imagery. SI also spun-off SI Detection (SID), which provides radiation monitoring solutions.

History

Satrec Initiative was founded in

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...

in 1999. There are two subsidiaries established based on SI's business in the remote-sensing satellite. One is SI Imaging Service (SIIS) founded in 2014, and they provide very high resolution optical and SAR images obtained from KOMPSAT-series and DubaiSat-2. Second subsidiary is SI Detection, and they develops and provides state-of-art radiation detectors derived from spacecraft radiation detecting systems.

Satellites and launches

KOMPSAT-1 KOMPSAT-1 (Korean Multi-purpose Satellite-1), also known as Arirang-1, was a satellite created by the Korea Aerospace Industries (KAI) and Korea Aerospace Research Institute (KARI), and launched by a United States launch vehicle on 21 December ...

(1999): image receiving and processing station * STSat-1 (2003) *

KOMPSAT-2 KOMPSAT-2 (Korean Multi-purpose Satellite-2), also known as Arirang-2, is a South Korean multipurpose Earth observation satellite. It was launched from Plesetsk Cosmodrome, Russia at 07:45:43 Coordinated Universal Time, UTC (16:05:43 Korea Stan ...

(2006): image receiving and processing station *

(2009): satellite and ground systems *

DubaiSat-1 DubaiSat-1 () is a remote sensing Earth observation satellite built by the ''Mohammed bin Rashid Space Centre (MBRSC)'' under an agreement with Satrec Initiative, a satellite manufacturing company in South Korea. DubaiSat-1 was launched on 29 ...

(2009): satellite and ground systems * COMS-1 (2010): communication payload integration, electrical modules,

Sun sensor A Sun sensor is a navigational instrument used by spacecraft to detect the position of the Sun. Sun sensors are used for Spacecraft attitude control, attitude control, solar array pointing, gyroscope, gyro updating, and safe mode (spacecraft), fai ...

, image receiving and processing station, and

mission control A mission control center (MCC, sometimes called a flight control center or operations center) is a facility that manages space flights, usually from the point of launch until landing or the end of the mission. It is part of the ground segment ...

subsystems *

RASAT RASAT was an Earth observation satellite designed and developed by TÜBİTAK Space Technologies Research Institute (TÜBİTAK UZAY) and produced in Turkey to provide high resolution imagery. It was the first remote sensing satellite fully realize ...

(2011):

Electro-optics Electro–optics is a branch of electrical engineering, electronic engineering, materials science, and material physics involving components, electronic devices such as lasers, laser diodes, LEDs, waveguides, etc. which operate by the prop ...

(EO) payload and attitude sensors * X-Sat (2011): EO payload *

KOMPSAT-3 KOMPSAT-3 (Korean Multi-purpose Satellite-3), also known as Arirang-3, is a South Korean multipurpose Earth observation satellite. It was launched from Tanegashima Space Center, Japan at 16:39 UTC on 17 May 2012. Like the earlier KOMPSAT-1 an ...

(2012): image receiving and processing station, mission control subsystems, and Sun sensor * Göktürk-2 (2012): EO payload *

KOMPSAT-5 KOMPSAT-5 (Korean Multi-purpose Satellite-5), also known as Arirang-5, is a South Korean observation satellite launched by Korea Aerospace Research Institute on August 22, 2013. It is a low-orbit satellite with an operational orbit of 550 km. D ...

(2013): fixed/mobile image receiving and processing station, mission control subsystems, SAR simulator, and Sun sensor *

DubaiSat-2 DubaiSat-2 () is an electro-optical Earth observation satellite built by the Mohammed bin Rashid Space Centre (MBRSC) under an agreement with Satrec Initiative, a satellite manufacturing company in South Korea. MBRSC's objective with DubaiSat-2 is ...

(2013): satellite and ground systems * Deimos-2 (2013): satellite and ground systems *

KOMPSAT-3A KOMPSAT-3A (Korean Multi-purpose Satellite-3A), also known as Arirang-3A, is a South Korean Earth observation satellite equipped with a 55cm-resolution electro-optical camera and an infrared sensor developed by the Korea Aerospace Research Insti ...

(2015): fixed/mobile image receiving and processing station and Sun sensor * TeLEOS-1 (2015): EO payload * Velox-C1 (2015) * KhalifaSat (2018): electric modules, telescope, and image receiving and processing station * GEO-KOMPSAT-2A/B (2018/2020): electric modules, space weather sensor, image receiving and processing station, and mission control subsystems * CAS500-1 (2021)

Platforms

SpaceEye-X

SpaceEye-X is a satellite bus, which was originally designed to carry very high resolution optical payload(<0.5 m resolution). SpaceEye-X provides the capability to accommodate various payloads, including SAR antennas.

SpaceEye-1

SpaceEye-1 is an improved model and advanced variant of the SI-300 satellite bus, which was the platforms of DubaiSat-2 and DEIMOS-2. Current model is optimized for Earth observation purposes (<1 m resolution).

SpaceEye-W

SpaceEye-W is a mini-satellite platform (100 kg class). This platform has a very flexible configuration; it can support assorted missions from technical demonstration and science missions to Earth observation missions and telecommunications.

SpaceEye-T

SpaceEye-T is a 700 kg class satellite platform that will form the basis for SI's own

Earth observation Earth observation (EO) is the gathering of information about the physical, chemical, and biosphere, biological systems of the planet Earth. It can be performed via remote sensing, remote-sensing technologies (Earth observation satellites) or throu ...

satellite constellation A satellite constellation is a group of artificial satellites working together as a system. Unlike a single satellite, a constellation can provide permanent global or near-global pass (spaceflight), coverage, such that at any time everywhere on E ...

. It will offer an optical payload with 30-cm resolution and 12 km swath width. As of March 2024, the first SpaceEye-T satellite is planned for launch in 2025.

Subsystem-level products

Electric Propulsion Systems

SI provides Hall-effect electric propulsion systems (HEPS) optimized for small satellite missions. They provide power processing units, propellant feeding units, and Hall effect thrusters with various power consumption range. HEPS has been acquired flight heritages; DubaiSat-2 and DEIMOS-2 equipped HEPS-200 (200 W power consumption).

Star Tracker

SI develops and manufactures star trackers that have enormous flight heritages.

Other products

* S-band transceiver * X-band transmitter * Steerable X-band antenna * Command and Data Handling Unit * Solid-state recorder * Sun sensor

References

External links

{{Authority control, state=expanded Aerospace companies of South Korea Spacecraft manufacturers Defence companies of South Korea Manufacturing companies of South Korea Companies based in Daejeon South Korean companies established in 1999 Manufacturing companies established in 1999