Korea’s Satellite Navigation System Developed by Thales Alenia Space Enters Service

Korea’s Satellite Navigation System Developed by Thales Alenia Space Enters Service

The Korea Augmentation Satellite System (KASS) developed by Thales Alenia Space as the prime contractor has been officially certified by the Korean authorities. Now operational, this navigation system is the result of a collaboration between Thales Alenia Space a joint venture between Thales (67%) and Leonardo (33%) — and the Korea Aerospace Research Institute (KARI) for the Korean Ministry of Land, Infrastructure and Transport (MOLIT).

Thales Alenia Space’s contract with KARI calls for the delivery of ground infrastructure, which the company began rolling out in 2020. The KASS system is initially operating via the MEASAT-3d geostationary satellite, launched in 2022, and will soon be supplemented by KOREASAT 6A which is under development by Thales Alenia Space for KT SAT Corporation, the Republic of Korea’s leading satellite communications operator. KOREASAT 6A will carry a satellite-based augmentation system (SBAS) payload designed also by Thales Alenia Space to improve service continuity and operational availability.

Developed in accordance with the international standards set by the International Civil Aviation Organization (ICAO), the Korean regional system will initially focus on aircraft applications, especially Safety of Life services used in flight phases, including landing, to enhance flight safety and efficiency, while reducing the environmental impact of aviation. It will be interoperable with the world’s other SBAS satellite navigation systems to guarantee flight safety as planes transition between different zones.

“Implementation of the KASS satellite navigation system marks a significant milestone in our close collaboration with KARI,” said Hervé Derrey, CEO of Thales Alenia Space. “Together, we’ve charted an innovative course for optimizing satellite navigation in the Republic of Korea, perfectly illustrating the synergy of our expertise. With the KASS system, we’re enabling Korean government bodies to develop applications aimed at improving safety and travel efficiencies for people in various areas of transport. We’re proud to be playing a central role in the delivery of this system, reflecting our commitment to innovation and security in satellite navigation.”

KASS, the second SBAS system developed by Thales Alenia Space, is derived from EGNOS, the European Geostationary Navigation Overlay System. It is designed to optimize the positioning and navigation performance of the existing GPS constellation and includes upgrades compatible with the Galileo and KPS (Korean Positioning System) constellations. It adds value by guaranteeing the integrity, availability, and continuity of services and improving positioning accuracy. KASS will reduce GPS positioning errors to about 1 meter from the current 15 to 33 meters to ensure geolocation accuracy throughout the country. The Republic of Korea will later extend its services to other applications such as public safety, road transport, shipping, and science.

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Publisher: SatNow
Tags:-  SatelliteLEOGround

GNSS Constellations - A list of all GNSS satellites by constellations


Satellite NameOrbit Date
BeiDou-3 G4Geostationary Orbit (GEO)17 May, 2023
BeiDou-3 G2Geostationary Orbit (GEO)09 Mar, 2020
Compass-IGSO7Inclined Geosynchronous Orbit (IGSO)09 Feb, 2020
BeiDou-3 M19Medium Earth Orbit (MEO)16 Dec, 2019
BeiDou-3 M20Medium Earth Orbit (MEO)16 Dec, 2019
BeiDou-3 M21Medium Earth Orbit (MEO)23 Nov, 2019
BeiDou-3 M22Medium Earth Orbit (MEO)23 Nov, 2019
BeiDou-3 I3Inclined Geosynchronous Orbit (IGSO)04 Nov, 2019
BeiDou-3 M23Medium Earth Orbit (MEO)22 Sep, 2019
BeiDou-3 M24Medium Earth Orbit (MEO)22 Sep, 2019


Satellite NameOrbit Date
GSAT0223MEO - Near-Circular05 Dec, 2021
GSAT0224MEO - Near-Circular05 Dec, 2021
GSAT0219MEO - Near-Circular25 Jul, 2018
GSAT0220MEO - Near-Circular25 Jul, 2018
GSAT0221MEO - Near-Circular25 Jul, 2018
GSAT0222MEO - Near-Circular25 Jul, 2018
GSAT0215MEO - Near-Circular12 Dec, 2017
GSAT0216MEO - Near-Circular12 Dec, 2017
GSAT0217MEO - Near-Circular12 Dec, 2017
GSAT0218MEO - Near-Circular12 Dec, 2017


Satellite NameOrbit Date
Kosmos 2569--07 Aug, 2023
Kosmos 2564--28 Nov, 2022
Kosmos 2559--10 Oct, 2022
Kosmos 2557--07 Jul, 2022
Kosmos 2547--25 Oct, 2020
Kosmos 2545--16 Mar, 2020
Kosmos 2544--11 Dec, 2019
Kosmos 2534--27 May, 2019
Kosmos 2529--03 Nov, 2018
Kosmos 2527--16 Jun, 2018


Satellite NameOrbit Date
Navstar 82Medium Earth Orbit19 Jan, 2023
Navstar 81Medium Earth Orbit17 Jun, 2021
Navstar 78Medium Earth Orbit22 Aug, 2019
Navstar 77Medium Earth Orbit23 Dec, 2018
Navstar 76Medium Earth Orbit05 Feb, 2016
Navstar 75Medium Earth Orbit31 Oct, 2015
Navstar 74Medium Earth Orbit15 Jul, 2015
Navstar 73Medium Earth Orbit25 Mar, 2015
Navstar 72Medium Earth Orbit29 Oct, 2014
Navstar 71Medium Earth Orbit02 Aug, 2014


Satellite NameOrbit Date
NVS-01Geostationary Orbit (GEO)29 May, 2023
IRNSS-1IInclined Geosynchronous Orbit (IGSO)12 Apr, 2018
IRNSS-1HSub Geosynchronous Transfer Orbit (Sub-GTO)31 Aug, 2017
IRNSS-1GGeostationary Orbit (GEO)28 Apr, 2016
IRNSS-1FGeostationary Orbit (GEO)10 Mar, 2016
IRNSS-1EGeosynchronous Orbit (IGSO)20 Jan, 2016
IRNSS-1DInclined Geosynchronous Orbit (IGSO)28 Mar, 2015
IRNSS-1CGeostationary Orbit (GEO)16 Oct, 2014
IRNSS-1BInclined Geosynchronous Orbit (IGSO)04 Apr, 2014
IRNSS-1AInclined Geosynchronous Orbit (IGSO)01 Jul, 2013