| Satellite | ETRISat |
|---|---|
| Spacecraft type | CubeSat |
| Units or mass | 6U |
| Status | Operational (Official press release on 2025-12-02 and Libre Space forums, last checked 2025-12-23) |
| Launched | 2025-11-26 |
| NORAD ID | 66662 ? |
| Deployer | Deployer [KAIROSPACE] |
| Launcher | Nuri |
| Organization | KARI (Korea Aerospace Research Institute) |
| Institution | Institute |
| Entity | Government (Civil / Military) |
| Nation (HQ) | South Korea |
| Nation (AIT) | Spain |
| Manufacturer | AIVT by Alen Space |
| Operator | Alen Space |
| Oneliner |
Collect marine weather information from buoys. |
| Description |
Provides marine climate prediction services by collecting marine weather information. Previously, information was collected through buoys in the middle of the sea, but data was insufficient due to high cost. Etrisat, a low-orbit satellite, is responsible for quickly delivering marine weather information by establishing a network without communication delays even in areas where there is no ground infrastructure, such as the ocean. Alén Space has completed the manufacture and delivery of ETRISat, a 6U CubeSat fully developed at its facilities in Nigrán (Spain) for the Electronics and Telecommunications Research Institute (ETRI), one of South Korea’s leading public research organisations. ETRISat’s primary objective is the in-orbit demonstration (IOD) of communications technologies, aligned with ETRI’s initiatives focused on the evolution of satellite and maritime communication networks. One of the mission’s challenges is the verification of signal transmission via ocean buoys equipped to collect data such as seawater temperature and wave height. During the mission, these signals will be relayed to ETRISat and subsequently transmitted to ground stations, enabling the evaluation of their effectiveness for real-time climate and ocean condition monitoring. The satellite carries a payload based on TREVO, Alén Space’s high-performance software-defined radio (SDR). Two independent applications run on this hardware: one developed by ETRI, focused on validating advanced communications solutions, and another implemented by Alén Space for the transmission of AIS (Automatic Identification System) signals used in maritime traffic management. This flexible architecture enables the customer to deploy its own solutions on a robust, flight-proven platform. Alén Space has delivered ETRISat as a turnkey project, covering all stages from mission design and AIV to test campaigns, the implementation of its Mission Control Software (MCS), and the initial in-orbit operations (LEOP). The Alén Space team’s ability to adapt to ETRI’s specific requirements, together with the experience gained in previous missions, made it possible to accelerate the satellite’s development timeline. |
| Results |
All 12 Nuri-deployed cube satellites establish ground communication, 2025-12-08. |
| Sources | [1] [2] [3] [4] |
| Photo sources | [1] |
| Keywords | AIS |
| On the same launch |
Last modified: 2026-01-07
